I’ve posted two more vintage catalog sheets/inserts to the catalog archive. One is from the very late 1950’s and the other is probably from right around 1970. These sheets came from a fellow BRIO collector whose catalog collection is even larger than mine.
The 1970 catalog sheet is a gem because it still shows trains with the original hook-and-eye connectors in a color photo. Most catalog images for these are graphite drawings from the 1960’s inserts. You can also see the original, unfinished harbor set.