Johnnie,The Jazz Record Mart was right there where I took those photos of Arvella---Grand & State St.--where the subway passengers climb to the street level. I did some research work for Bob Koester back in '64---looked up some Lemon Jefferson 78s on Broadway label for him in the card file (no computers then) at the Folksong Archive at the Library of Congress. First met Joe Hickerson that summer.
Jim Brewer and I worked at the No Exit for many years back then. Him on Wednesday nights and me on Thursdays.The No Exit was just sold last week!! I played there for 37 years...but it's still there!!!
Art