The Wayback Machine is an archive of old websites. You simply enter the domain there and get a timeline of all static snapshots.
Recently, a large cultural treasure of old ISOs/CD images has also been added. Under the following link you can find old games, magazines, operating system and also old mail order catalogs: https://archive.org/details/softwareSo for example the Otto catalog CD from 2000: https://archive.org/details/ottofruehjahrsommer2000
The 1992 Lego catalog is also a real highlight: https://archive.org/details/netherlands-Katalog_Lego-1992/page/n43/mode/2up
My absolute favorite is the Quelle catalog from 1986: https://archive.org/details/idoc.pub_quelle-katalog-herbst-winter-1986-87/page/899/mode/2up?view=theater
