Originally String Town, the name was changed to Gertrude when the post office opened. The Gertrude post office operated from 1881 to 1893, from 1896 to 1900, when the service was transferred to Ahwahnee, with a move in 1899. The name honored Gertrude Haley, the town's first postmaster.
- U.S. Geological Survey Geographic Names Information System: Gertrude, California
- Durham, David L. (1998). California's Geographic Names: A Gazetteer of Historic and Modern Names of the State. Clovis, Calif.: Word Dancer Press. p. 739. ISBN 1-884995-14-4.
|This Madera County, California-related article is a stub. You can help Wikipedia by expanding it.|