This is somewhat tangential, but it seems to me that the foundational work in rose illustration was done by Redouté. https://en.wikipedia.org/wiki/...
. His work is so good that, IMO, he still sets the bar for rose illustrators. The Taschen publication of his watercolored roses prints, Redouté Roses, is available at Amazon.com, and I would highly recommend it.
Here are some books of merit for their rose photography:
-- Stirling Macoboy's The Ultimate Rose Book. It does have a lot of coverage of modern roses, but it does a creditable job of covering old roses, too.
-- Tony Lord's Designing with Roses. Not a rich source of graphic material, but Lord is among the most artful of rose photographers for showing how roses integrate into a garden that is about more than just roses.
-- Botanica's Roses (the full sized monster which - as is probably true of the other two titles - must be out of print.) - broad coverage of roses with photographs of a consistently high quality. One of my favorite gardening books for just browsing and inciting rose-lust.
I write about books because I find that there are precious few online photos that possess the kind of detail in garden textures that one can find in a largish, high resolution color print. A serious artist might care about this.