Try accessing Sanborn maps through the Library of Congress website
Search: loc sanborn maps Memphis
Try contacting the Memphis Rail and Trolley Museum, Mike Fleming, President and ask for sources; he’s a model railroader and knows a lot of folks in town
Since you’re seeking 1960s info I’d suggest going to the Memphis and Shelby County Division of Planning and Development. For example they have online mapping and likely have older mapping as well
Try:
Historic Shelby County online historic aerial photos
