This ledger covers the period January 1902-December 1903. As the account book of final entry, it summarizes transactions pertaining to the experiments performed at the laboratory. There are also accounts relating to Edison's royalties, his companies and business operations, laboratory suppliers, the Fort Myers laboratory, and Glenmont. Entries for experimental expense accounts include the project numbers assigned in laboratory record books N-01-03-15 and N-10- 07-26. The spine is stamped "Ledger" and is labeled "T.A.E. Personal General Ledger Jany 1, 1902 To Dec. 31, 1903." The front cover is labeled "Ledger No 6 Personal General Ledger Jany 1st 1902 - Dec 31st 1903." The book contains 473 numbered pages and an index; many pages are blank.