This minute book contains an account of business meetings of the Muckers of the Edison Laboratory from August 1902 through February 1909, along with a sequentially numbered list of members. Next to most of the names is a notation of the month and year that the member entered into Edison's employ. Many of the entries indicate the date on which the individual left the laboratory, and a few also include a date of death or resignation. Particularly during the period in which A. Theo E. Wangemann served as secretary (1904-1906), the minutes contain numerous jokes and sketches, along with comical reports of periodic "outings" by the club, usually to dining and drinking establishments in New York City. The minutes are revealing of the work culture at the West Orange laboratory, and there are occasional references to Edison, who joined in one of the club's more sober outings in 1906.

The cover is stamped "Record" and is marked "of Muckers." The spine is marked "Minutes," "Muckers," and "Edison Laboratory Orange, NJ." The book contains 239 numbered pages. Some of the pages are blank; pages 23-24 have been removed from the book. Photographs, postcards, newspaper clippings, and other items have been inserted into the book.