Random tidbit:

By the early 1950s the restaurant offered “extra thick man size” New York-cut steak for $4.50 and whole baby broiled lobster for $3.50

I know from the early 60's to mid-2000's, inflation is roughly 10x. So that's a steak for about $50 in today's money, and lobster for about $35. (Though inflation on those particular items may vary).