The Plarail Museum

not quite sure i understand, all the catalogs are there. from the beginning. from the very first one up until the 1990's. i believe.

From the home page (your link above), select the second option down on the right-hand side, this one:    

This takes you to the catalog pages.

Above each of the catalog images on the first page you will see a magnifying glass symbol, and the text "←このボタンをクリックすると、全ページを拡大表示します". Translated into English, this reads "← Click this button to enlarge all pages ". Clicking on the buttons takes you to web addresses that no longer exist. This what I was referring to when I said "It's very unfortunate that the links to bigger images of the earlier catalogues no longer work."