The Online Books Page

Books by P. Duff:

Books in the extended shelves:

• Duff, P. (Peter), 1802-1869: Duff's book-keeping, by single and double entry. Practically illustrating merchants', manufacturers', private bankers', railroad, and national bank accounts ... (Harper & brothers, 1883) (page images at HathiTrust)
• Duff, P. (Peter), 1802-1869: Duff's book-keeping, by single and double entry. Practically illustrating merchants', manufacturers', private bankers', railroad, and national bank accounts ... (Harper & brothers, 1868) (page images at HathiTrust)
• Duff, P. (Peter), 1802-1869: Duff's book-keeping, by single and double entry Practically illustrating merchants', manufacturers', private bankers', railroad, and national bank accounts ... (Harper & Brothers, 1871) (page images at HathiTrust)
• Duff, P. (Peter), 1802-1869: Duff's North American accountant: embracing single and double entry book-keeping, practically adapted to the inland and maritime commerce of the United States. Exemplifying all modern improvements in the science, with a new and certain method of detecting errors and proving the ledger. (Harper, 1854) (page images at HathiTrust)
• Duff, P. (Peter), 1802-1869: Duff's North American accountant : embracing single and double entry book-keeping, practically adapted to the inland and maritime commerce of the United States : exemplifying all modern improvements in the science, with a new and certain method of detecting errors and proving the ledger ... complete in three parts (Harper & Brothers, 1859) (page images at HathiTrust)
• Duff, P. (Peter), 1802-1869: North American accountant. (Harper & Brothers, 1857) (page images at HathiTrust)
• Duff, P. (Peter), 1802-1869: North American accountant (Harper, 1848) (page images at HathiTrust)

Find more by P. Duff at your library, or elsewhere.