Boatinfo - The library, containing manuals, brochures and other technical documents from the last hundred years!
This is a huuuuge collection of oldschool brochures I found.
Clarity isn't as good as the scans on the "oldomc.de" site, but with a bit of squinting & judicious use of the zoom tool the specs are readable-ish.
Covers most fuel burning transom moutned toys from prety much the day they were inveneted!
(there are, needless to say, gaps in the timelines)