Items

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Items

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  [CJ617AAC], Letter from William Horatio Mason to Thomas Alva Edison, January 5th, 1909

  1909-01-05
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  [CJ617AAI], Letter from William Horatio Mason to Thomas Alva Edison, January 15th, 1909

  1909-01-15
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  [CJ617AAN], Letter from William Horatio Mason to Thomas Alva Edison, January 21st, 1909

  1909-01-21
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  [CJ617AAO], Letter from William Horatio Mason to Thomas Alva Edison, January 23rd, 1909

  1909-01-23
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  [CJ617AAP], Letter from William Horatio Mason to Thomas Alva Edison, January 23rd, 1909

  1909-01-23
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  [CJ617AAQ], Letter from William Horatio Mason to Thomas Alva Edison, January 23rd, 1909

  1909-01-23
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  [CJ617AAS], Letter from William Horatio Mason to Thomas Alva Edison, January 26th, 1909

  1909-01-26
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  [CJ617AAU], Letter from William Horatio Mason to Thomas Alva Edison, January 28th, 1909

  1909-01-28
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  [CJ617AAX], Letter from William Horatio Mason to Thomas Alva Edison, January 30th, 1909

  1909-01-30
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  [CJ617AAY], Letter from William Horatio Mason to Thomas Alva Edison, February 2nd, 1909

  1909-02-02
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  [CJ617AAZ], Letter from William Horatio Mason to Thomas Alva Edison, February 4th, 1909

  1909-02-04
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  [CJ617ABC], Letter from William Horatio Mason to Thomas Alva Edison, February 10th, 1909

  1909-02-10
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  [CJ617ABE1], Letter from William Horatio Mason to Thomas Alva Edison, March 10th, 1909

  1909-03-10
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  [CJ617ACC], Letter from William Horatio Mason to Thomas Alva Edison, June 28th, 1909

  1909-06-28
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  [CJ617ACJ], Letter from William Horatio Mason to Thomas Alva Edison, July 15th, 1909

  1909-07-15
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  [CJ617ACO], Letter from William Horatio Mason to Thomas Alva Edison, July 27th, 1909

  1909-07-27
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  [CJ617ADT], Letter from William Horatio Mason to Thomas Alva Edison, October 16th, 1909

  1909-10-16
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  [CJ617ADU], Letter from William Horatio Mason to Thomas Alva Edison, October 16th, 1909

  1909-10-16
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  [CJ617AEI], Letter from William Horatio Mason to Thomas Alva Edison, November 1st, 1909

  1909-11-01
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  [CJ617AES], Letter from William Horatio Mason to Thomas Alva Edison, November 22nd, 1909

  1909-11-22
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  [CJ617AEU], Letter from William Horatio Mason to Thomas Alva Edison, December 20th, 1909

  1909-12-20
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  [CJ619AAB], Letter from William Horatio Mason to Thomas Alva Edison, January 4th, 1910

  1910-01-04
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  [CJ619AAF], Letter from William Horatio Mason to Thomas Alva Edison, January 14th, 1910

  1910-01-14
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  [CJ619ACB], Letter from William Horatio Mason to Thomas Alva Edison, May 17th, 1910

  1910-05-17
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  [CJ619ACS], Letter from William Horatio Mason to Thomas Alva Edison, May 30th, 1910

  1910-05-30
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  [CJ619ADG], Letter from William Horatio Mason to Thomas Alva Edison, June 18th, 1910

  1910-06-18
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  [CJ619ADJ], Letter from William Horatio Mason to Thomas Alva Edison, June 21st, 1910

  1910-06-21
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  [CJ619AEJ], Letter from William Horatio Mason to Thomas Alva Edison, July 22nd, 1910

  1910-07-22
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  [CJ619AEN], Letter from William Horatio Mason to Thomas Alva Edison, July 29th, 1910

  1910-07-29
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  [CJ619AEQ], Letter from William Horatio Mason to Thomas Alva Edison, August 3rd, 1910

  1910-08-03
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  [CJ619AER], Letter from William Horatio Mason to Thomas Alva Edison, August 3rd, 1910

  1910-08-03
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  [CJ619AES], Letter from William Horatio Mason to Thomas Alva Edison, August 3rd, 1910

  1910-08-03
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  [CJ619AEV], Letter from William Horatio Mason to Thomas Alva Edison, August 5th, 1910

  1910-08-05
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  [CJ619AEZ], Letter from William Horatio Mason to Thomas Alva Edison, August 8th, 1910

  1910-08-08
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  [CJ619AFA], Letter from William Horatio Mason to Thomas Alva Edison, August 9th, 1910

  1910-08-09
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  [CJ619AFD], Letter from William Horatio Mason to Thomas Alva Edison, August 10th, 1910

  1910-08-10
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  [CJ619AFH], Letter from William Horatio Mason to Thomas Alva Edison, August 11th, 1910

  1910-08-11
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  [CJ619AFN], Letter from William Horatio Mason to Thomas Alva Edison, August 17th, 1910

  1910-08-17
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  [CJ619AFQ], Letter from William Horatio Mason to Thomas Alva Edison, August 20th, 1910

  1910-08-20
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  [CJ619AGG], Letter from William Horatio Mason to Thomas Alva Edison, October 5th, 1910

  1910-10-05
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  [CJ619AGU], Letter from William Horatio Mason to Thomas Alva Edison, October 25th, 1910

  1910-10-25
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  [CJ619AGV], Letter from William Horatio Mason to Thomas Alva Edison, November 3rd, 1910

  1910-11-03
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  [CJ619AHM], Letter from William Horatio Mason to Walter Seeley Mallory, December 3rd, 1910

  1910-12-03
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  [CJ619AHN], Letter from William Horatio Mason to Walter Seeley Mallory, December 3rd, 1910

  1910-12-03
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  [CJ619AHR], Letter from William Horatio Mason to Thomas Alva Edison, December 14th, 1910

  1910-12-14
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  [CJ619AHS], Letter from William Horatio Mason to Thomas Alva Edison, December 15th, 1910

  1910-12-15
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  [CJ619AHU], Letter from William Horatio Mason to Thomas Alva Edison, December 20th, 1910

  1910-12-20
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  [CJ619AHV], Letter from William Horatio Mason to Thomas Alva Edison, December 22nd, 1910

  1910-12-22
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  [CJ619AID], Letter from William Horatio Mason to Walter Seeley Mallory, January 27th, 1911

  1911-01-27
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  [CJ620AAG], Letter from William Horatio Mason to Thomas Alva Edison, January 11th, 1911

  1911-01-11
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  [CJ620AAO], Letter from William Horatio Mason to Thomas Alva Edison, January 30th, 1911

  1911-01-30
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  [CJ620ABL], Letter from William Horatio Mason to Thomas Alva Edison, February 28th, 1911

  1911-02-28
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  [CJ620ABQ], Letter from William Horatio Mason to Thomas Alva Edison, April 5th, 1911

  1911-04-05
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  [CJ620ABU], Letter from William Horatio Mason to Thomas Alva Edison, April 8th, 1911

  1911-04-08
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  [CJ620ABW], Letter from William Horatio Mason to Thomas Alva Edison, April 15th, 1911

  1911-04-15
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  [CJ620ACA], Letter from William Horatio Mason to Thomas Alva Edison, April 17th, 1911

  1911-04-17
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  [CJ620ACK], Letter from William Horatio Mason to Thomas Alva Edison, April 29th, 1911

  1911-04-29
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  [CJ620ACM], Letter from William Horatio Mason to Thomas Alva Edison, May 2nd, 1911

  1911-05-02
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  [CJ620ACY], Letter from William Horatio Mason to Walter Seeley Mallory, June 28th, 1911

  1911-06-28
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  [CJ620ADC], Agreement, Walter Seeley Mallory, William Horatio Mason, Thomas Alva Edison, July 14th, 1911

  1911-07-14
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  [CJ621AAI], Letter from William Horatio Mason to Thomas Alva Edison, February 15th, 1912

  1912-02-15
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  [CJ621AAR], Letter from William Horatio Mason to Thomas Alva Edison, May 3rd, 1912

  1912-05-03
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  [CJ621ABW], Letter from William Horatio Mason to Thomas Alva Edison, August 15th, 1912

  1912-08-15
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  [CJ621ACH], Letter from William Horatio Mason to Harry Frederick Miller, October 24th, 1912

  1912-10-24
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  [CJ621ACS], Letter from William Horatio Mason to Thomas Alva Edison, December 12th, 1912

  1912-12-12
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  [CM01AJ1], Cost Estimate, William Horatio Mason, 1915

  1915-00-00
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  [CM01AO], Report from William Horatio Mason, May 16th, 1916

  1916-05-16
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  [CM06AF], Letter from William Horatio Mason to William Henry Meadowcroft, April 5th, 1916

  1916-04-05
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  [CM07AL], Letter from William Horatio Mason to Thomas Alva Edison, December 1st, 1915

  1915-12-01
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  [CM08AS], Telegram from William Horatio Mason to Claude Heft Opdyke, January 28th, 1916

  1916-01-28
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  [CM08BA], Letter from William Horatio Mason to Claude Heft Opdyke, September 7th, 1916

  1916-09-07
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  [D0623AAH], Letter from William Horatio Mason to Thomas Alva Edison, September 10th, 1906

  1906-09-10
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  [D0806AAS], Letter from William Horatio Mason to Thomas Alva Edison, November 23rd, 1908

  1908-11-23
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  [D0908AAZ], Telegram from William Horatio Mason, Walter Seeley Mallory to Thomas Alva Edison, February 11th, 1909

  1909-02-11
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  [D0932ABG], Letter from William Horatio Mason to Frank Lewis Dyer, June 7th, 1909

  1909-06-07
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  [D1038AAE], Letter from William Horatio Mason to Harry Frederick Miller, August 24th, 1910

  1910-08-24
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  [D1038AAF], Letter from William Horatio Mason to Harry Frederick Miller, September 17th, 1910

  1910-09-17
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  [D1038AAG], Letter from William Horatio Mason to Thomas Alva Edison, October 31st, 1910

  1910-10-31
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  [E1233AA], Letter from William Horatio Mason to Thomas Alva Edison, January 23rd, 1912

  1912-01-23
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  [E1330A], Letter from William Horatio Mason to Thomas Alva Edison, February 13th, 1913

  1913-02-13
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  [E1330B], Letter from William Horatio Mason to Thomas Alva Edison, May 30th, 1913

  1913-05-30
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  [E1518LAY], Letter from William Horatio Mason to Thomas Alva Edison, December 11th, 1915

  1915-12-11
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  [E1518LBC], Telegram from William Horatio Mason to Claude Heft Opdyke, December 13th, 1915

  1915-12-13
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  [E1518LBS], Telegram from William Horatio Mason to Claude Heft Opdyke, December 17th, 1915

  1915-12-17
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  [E1331BC], Letter from William Horatio Mason to William Henry Meadowcroft, July 22nd, 1913

  1913-07-22
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  [E1331BG], Letter from William Horatio Mason to Thomas Alva Edison, November 13th, 1913

  1913-11-13
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  [E1432AN], Letter from William Horatio Mason to Walter Seeley Mallory, June 3rd, 1914

  1914-06-03
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  [E1432AZ], Letter from William Horatio Mason to Walter Seeley Mallory, October 28th, 1914

  1914-10-28
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  [E1432BC], Letter from William Horatio Mason to Walter Seeley Mallory, November 8th, 1914

  1914-11-08
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  [E1438CD], Telegram from William Horatio Mason to Thomas Alva Edison, December 17th, 1914

  1914-12-17
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  [E1518BAH], Telegram from William Horatio Mason to Claude Heft Opdyke, February 5th, 1915

  1915-02-05
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  [E1518BBF1], Letter from William Horatio Mason to Harry Frederick Miller, February 23rd, 1915

  1915-02-23
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  [E1518CAJ], Telegram from William Horatio Mason to Thomas Alva Edison, March 4th, 1915

  1915-03-04
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  [E1518CCL], Telegram from William Horatio Mason to Thomas Alva Edison, March 16th, 1915

  1915-03-16
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  [E1518CCN], Telegram from William Horatio Mason to Thomas Alva Edison, March 16th, 1915

  1915-03-16
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  [E1518CDB], Telegram from William Horatio Mason to Cambria Steel Co, March 17th, 1915

  1915-03-17
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  [E1518CDX], Letter from William Horatio Mason to Cambria Steel Co, Edgar Whitney Clarke, March 20th, 1915

  1915-03-20
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  [E1518CEQ], Telegram from William Horatio Mason to Thomas Alva Edison, March 24th, 1915

  1915-03-24
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  [E1518CEY], Telegram from William Horatio Mason to Thomas Alva Edison, March 25th, 1915

  1915-03-25
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  [E1518DAQ], Letter from William Horatio Mason to Thomas Alva Edison, April 4th, 1915

  1915-04-04