I call Owensboro, KY my home, which is right across the river from Rockport. I
 did some research at the library in the old city directories and found A&M Motor
 Sales. Don't know who owned that, but they showed up in the '63, '64 and '65 city
 directories. Not there in '66. They must've packed it in around the "end of the
 ball game." They were located on East Second Street, and if the address is
 correct, it would appear they operated out of a tobacco warehouse, because 
that is what stands at that location, and it was certainly there well before 
1963! I know that because it sold at auction a few years back, and was advertised
 as having been built in 1902.
jnewkirk77