Bayko box Designer (Person) Plimpton, Charles Manufacturer Plimpton Engineering Company Date 1934 - 1967 (circa)
Bayko Building Set Designer (Person) Plimpton, Charles Manufacturer Plimpton Engineering Company Date 1950 - 1959 (circa)
Dominoes for the blind Designer (Person) Unknown Manufacturer Unknown Manufactured for The Royal National Institute for the Blind Date 1960 - 1969