This includes the years of:
I actually found a cousin of my great-grandfather in the 1935 census for Dade County, Florida--Martin Fecht. I split his entry over two images, but he is shown with his wife Gladys and children, Billie and Harlan.
On the second image, his family's four entries start with the one where the husband is born in Illinois. I was not aware that he ran a service station and I did learn that he must have gone to school through the eighth grade and that his wife graduated from high school.
Readers with Florida ancestors can search the Florida state censuses 1867-1945 on Ancestry's website.