[6] He formed a partnership with William A. Bates in 1900,[7] an architect who had made a reputation designing houses in Bronxville, New York.

Federal law required able-bodied male college students to undergo military instruction for a state's reserve militia.

[11]Ballentine's daughter Alice married lawyer Henry Young Jr. in 1899, and the father-of-the-bride gave the couple a 100 acre (40.47 hectare) tract of mountainous land in Bernardsville, New Jersey as a wedding gift.

[12] Four years later, Gifford designed a country house for the Youngs, "Brushwood," a 30-room Colonial Revival mansion overlooking Pleasant Valley.

A decade later, Gifford designed another replica of the Ford Mansion for the 1904 Louisiana Purchase Exposition in St. Louis.

[17] Several of Gifford's clients were members of the Jekyll Island Club, a private hunting resort in Glynn County, Georgia.

[18] All but Pulitzer Cottage survive, and are contributing properties in the Jekyll Island Club National Historic Landmark District.