After ten years in practice alone, mainly designing starter homes, he partnered with Daniel Riggs Huntington from 1901 to 1905 as Fisher & Huntington, during which time the firm designed increasingly expensive residences and also commercial buildings.
[2] In Colorado, the firm worked on dozens of notable buildings, and has left a legacy unique in the state.
Of 67 surviving buildings in Denver identifiable as being by Fisher & Fisher, 50 are either listed on the U.S. National Register of Historic Places (NRHP), individually or as part of historic districts, or are eligible for listing.
[3] For example, William and Arthur Fisher planned the town of Parco, Wyoming (now Sinclair) and designed its public buildings.
[4] The Fisher brothers were unusually innovative,[5] and the firm's buildings are in a variety of styles.