In the first issue of Sports Collector's Digest from October 12, 1973, which I posted the other day, there is a story and numerous photos about a sports collecting convention held in New York City on September 14-16, 1973. This was actually the second card convention to be held in New York at the District 65 Center -- the first had been held a few months before on Memorial Day weekend, 1973. The July 1973 issue of Sports Scoop (issue #6) had two articles about that show -- one by 14-year-old Keith Olbermann, and one by Ron Greenwood. I've scanned them below. The photos are a nice touch -- Olbermann took one of Greenwood standing next to Mike Aronstein, and Greenwood took one of Olbermann, apparently eating a hot dog. There's also a picture of Net54's own Fred McKie, along with Dan Dischley (of The Trader Speaks) and Bruce Yeko (of Wholesale Cards), all three of whom were at Aronstein's 1970 mini-convention that I posted an article about last night.
