This series contains receipts and other financial papers documenting William du Pont's expenses from the 1880s through 1927. While the papers for the 1880s (about 0.1 linear ft.) pertain to business, the rest of the series documents William du Pont's personal and family expenses.

During the 1880s, William du Pont was secretary and treasurer of the Repauno Chemical Company (and president after the death of his cousin Lammot du Pont in March 1884) and was also the treasurer of Hercules Powder Company and the Torpedo Company. He kept track of the financial dealings between these companies and E.I. du Pont de Nemours Company. Documents from the 1880s include monthly statements of accounts, salary receipts, receipts of contractors involved in the Repauno mill construction, and statements of materials bought by Repauno Company.

For the decade while the family lived in England, documents reflect William du Pont's activities in the United States, which were either controlled by du Pont himself or by his personal secretary Charles (Chas.) K. Lennig. Only a small portion of the receipts for 1900 were from England.

In 1902, the family returned from England and moved into their new house in Montpelier, Virginia. There is a gap in the chronologically organized material for the period of 1902-1912, which is partly covered by the files of the Special Project section (see below). For the years 1913-1928, there are numerous documents and, together with the Special Projects files, they present a comprehensive picture of the family expenses.

The documents consist of:

1) Statements, payrolls and personal receipts for residence maintenance and farm workers; statements of business expenses from William du Pont's personal secretaries Chas. K. Lennig, E. C. McCune and E. E. Edinger; Elk Point (South Dakota) property agent J. T. Martin; and manager of the Altama estate in Georgia, F. N. Modena. Files of 1922-1925 include William du Pont's accounts with Montpelier Supply Company. Files from the 1920s contain expenses of du Pont's adult children Marion du Pont (Somerville) and William du Pont Jr. and William du Pont's stepson Captain George Zinn, as well as educational and medical bills for Annie Rogers du Pont's relative Theodore B. Rogers.

2) Personal financial documents:

a) tax receipts for personal properties;

b) bank deposit confirmations from the Chemical National Bank of New York, Philadelphia National Bank, Wilmington Trust Company, National Bank of Brunswick (Georgia); Central Union Trust Company (New York, New York);

c) dividend notices (beginning in 1916) which include among others: Atlas Powder Company, Consolidated Gas Company of New York, Delaware Railroad Company, E.I. du Pont de Nemours and Company, E.I. du Pont de Nemours Powder Company, Equitable Trust Company (Wilmington, Delaware), Hercules Powder Company, Pennsylvania Railroad, Western Union Telegraph Company, Wilmington Trust Company;

d) receipts from bond and stock brokers and investment bankers: George P. Bissell, Laird & Company, Baker, Watts & Company, United States Fidelity and Guaranty Company, Paul & Company; J. P. Morgan & Company;

e) receipts from insurance companies and agents: Farmers' Mutual Fire Insurance Company of the State of Delaware, Gilpin & Company (Wilmington), Benedict & Benedict (New York);

f) receipts from family attorneys: Ward, Gray, and Neary (Wilmington); Adams & Adams (London);

g) office-renting expenses receipts: Equitable Guarantee & Trust Company, DuPont Building Corporation, Delaware Trust Company, Delaware Title Insurance Company.

3) Estate maintenance receipts from contractors and suppliers: Gawthrop & Brother, Jackson & Sharp Company, Reese & Brother, Garrett, Miller & Company, Charles Warner Company; Conly Brothers (Wilmington); Henry F. Michell Company, Henry A. Dreer, Inc., Madeira, Hill & Company, Atlantic Refining Company (Philadelphia), Peter Henderson & Company (New York); Hickory Seed Company (North Carolina); Standard Oil Company (Virginia), The Royal Seed Establishment (Reading, England).

4) Transportation/freight receipts, statements of freight, bills of lading from Adams Express Company/American Railway Express Company; Philadelphia, Wilmington & Baltimore Rail Road Company; United States Express Company; Philadelphia & Reading Railroad Company; Philadelphia, Baltimore & Washington Railroad Company; Pennsylvania Railroad; Southern Railway (United States); Baltimore and Ohio Railroad Company.

5) Telephone company bills: Delaware and Atlantic Telegraph and Telephone Company, Diamond State Telephone Company; Culpeper Telephone Company (Virginia).

6) Expenses for purchasing horses, their care, and harness and racing equipment: Joshua Conner, Harness, Collar, and Trunk Factory; Jones Guthrie & Company, Elijah Tomlinson & Son ("practical horse shoers") (Wilmington); Robert Brown; Martin & Martin (Philadelphia); veterinarians: J. R. Kuhns (Wilmington), John W. Adams (Pennsylvania), H. S. Willis, Henry Yager (Virginia); horse racing, hunting, and agricultural association and club memberships: American Hackney Horse Society (William du Pont was on the board), Devon Horse Show Association, National Horse Show Association of America, Delaware Horse Show Association, Orange Horseman's Association, Association of American Horse Shows, Percheron Society of America, Horse Association of America, National Agricultural Society, New York Farmers (Organization), American Game Protective and Propagation Association, New York Jockey Club, Turf and Field Club (New York), Saddle & Sirloin Club (Chicago), United Hunts Racing Association, National Parks Association, Drum Point Gunning Club (Virginia), Rose Tree Fox Hunting Club (Philadelphia).

7) Farm equipment and animal feed: Dairymens Supply Company (Philadelphia), National Biscuit Company (New Jersey), Ralston Purina Company, White Brothers (Wilmington), Dyer & Company (Kansas City, Missouri).

8) Yacht purchasing, sales, supplies, care, repairs, and club membership: Harlan & Hollingsworth Company (Wilmington), J. R. Hudson Company, H. C. Wintringham, S. Apple & Company (New York); Atlantic, Philadelphia and New York yacht clubs.

9) Automobile expenses: Packard Motor Car Company, Delaware Motor Sales Company, Bellevue Garage, Motorcar Service Company (Wilmington), Bates' Livery and Garage (Orange, Virginia).

10) Photographers' bills for photographing horses and races: Reily & Way, L. Stanger (Philadelphia ); H. A. Strohmeyer Jr. (New Jersey); Robert F. Hildebrand, Haaz (New York).

11) Periodicals and newspapers subscription and advertising payments: Every Evening, Evening Journal, and Daily Morning News published by News-Journal Company (Wilmington, Delaware); The Field Illustrated (New York); The Philadelphia Inquirer; Racing Calendar (New York); Agricultural Digest (New York); Breeder's Gazette; The Spur; Philadelphia Inquirer; New York Herald; The Commercial and Financial Chronicle (New York); Rider and Driver (New York); The Wall Street Journal.

12) Social and cultural club membership payments: Historical Society of Delaware, New York Camera Club, Wilmington Club, Wilmington Country Club, Knickerbocker Club and Metropolitan Club (New York), Philadelphia Country Club, Rittenhouse Club (Philadelphia).

13) Charity: Sunday Breakfast Mission, Associated Charities, Alexis I. du Pont Public School, Bethany Baptist Church (Wilmington), Manhattan Eye, Ear and Throat Hospital, Massachusetts Institute of Technology, Salvation Army, YMCA and YWCA, Sulgrave Institution (New York).