After having seen the rest of Mel Brooks stuff, I sent him a request for my money back. The only thing that got my attention was 'Jews In Space', the trailer for the next movie! (never, of course, actually done.)
Heck, even SpaceBalls was funnier.
Berny, you refer to 2 of his better known and really Funnier flicks. Try 'The 12 Chairs' which is Great....or 'The Producers' which did make it to Broadway. Gene Wilder and Zero Mostel in 'The Prducers' are Perfectly cast and do a tremendous job.
Check those out and tell me they aren't head/shoulders funnier than 'History.