This journal covers the period April 1902-December 1931. Chronological entries provide information about transactions posted to various accounts. There is only one entry per year from December 1910 through December 1931. Inserted into the book are three loose pages containing a summary of MECNJ's account with Edison from March 1909 through December 1931. The cover is labeled "Journal Mining Exploration Co. of New Jersey 1-108." The book contains 200 numbered pages; it has been used to page 67.