Just now I'm putting together a database of all professional model catalogue data I can find off the various manufacturers websites, so I have all the relevant photos and specs info in one easily accessible package.
Where pdf catalogues are not provided, I'm composing my own by printing off webpages, or even photoshopping screen dumps on occasion. I plan to merge the documents into a set of say 200 page volumes with manufacturers in alphabetical order. It's quite time consuming, but I've got a bit of free time just now.
I'm happy to email this around when I've done if anyone is interested.
Obviously, I'm tending to prioritise models that appeal to me, but could include say cornets and flugels if I get advance notice of a call for it.
All the best,