I found another location of the Main Street Theater. I was browsing the newspaper Jewish Herald-Voice dated January 15, 1981 and came across a movie listing for "First Night of Pygmalion"
Now playing at the Main Street Theater
6265 South Main Street * 524-6706
"First Night of Pygmalion"
A comedy based on the correspondence between Georg Bernard Shaw and the original Eliza Doolittle, about the riotous circumstances surrounding the first production of Shaw's masterpiece.
I know of other locations of the Main Street Theater:
Main Street Theater At 2540 Times Blvd.
Main Street Theater At 4617 Montrose Blvd.
Main Street Theater At 6265 South Main St.