Oliver G. Traphagen

Among his most famous landmarks are the Oliver G. Traphagen House in Duluth, called the Redstone,[2] and the Moana Hotel in Honolulu, both of which are on the National Register of Historic Places, as are several other buildings he designed.

In the 1870s Traphagen moved to St. Paul, Minnesota, with his parents where he worked as a carpenter, and later as an apprentice to the architect George Wirth.

Noted Duluth architect Frederick German worked as a draftsman for Traphagen and Fitzpatrick during this time.

[7] Because his daughter's health required a warmer climate, the family relocated to the soon-to-be-annexed Republic of Hawaii in October 1897.

[9] Among the last buildings he designed in Hawaii was the Punahou School president's home, which celebrated its 100th anniversary in December 2007.