I would like to look for photos of Main Street in the early 1950's. Where should I begin to look for these?
The right place to begin in Sarasota might be Sarasota County Historical Resources, 6062 Porter Way, Sarasota, FL, 34232.
This is also called the Sarasota History Center and can be found online at https://www.scgov.net/History/Pages/default.aspx
What they do, as described in these few lines specifically about research done by the public, is best said in their own words:
"The Historical Resources collects information and artifacts related to the history of the county from pre-historic times to the present. These collections are stored in the center's archives at 6062 Porter Way in Sarasota, where they are made available for public research."
Jeff Austin, Library Assistant
Sarasota County Library System