This ledger of accounts payable and receivable covers the period January 1872-January 1873. The spine is labeled "1872 Edison & Unger," and marked "LEDGER E & U." The book contains 452 numbered pages preceded by an index of 28 pages.

Blank pages: 10-29, 48-79, 92-95, 98-99, 102-103, 108-109, 114-115, 126-127, 130-131, 150-151, 220-223, 232-233, 240-241, 248-249, 260-428, 441-448, 451.

Missing pages: 429-440, 449-450.

Courtesy of Thomas Edison National Historical Park.