Although I never visited it, we traveled past it regularly. Ironically, it's within (long) walking distance from where I live right now.
Dispensa's Kiddie Kingdom lasted from 1975-1984, which is pretty impressive considering my kiddie park, Fairyland, closed in 1976 due, in large part, to the opening of Six Flags in Gurnee.
So take a trip back in time and enjoy this site - a really thorough recollection of Dispensa's short history.
P.S. I did go to Dispensa's Castle of Toys a few times, but I can't remember if we bought anything there...