Thanks, Polymerous! That gives me a start. The good thing about older cultivars is that they might be much more affordable for me, personally. There is something to be said for some of the older cultivars. The gene pool may be less extensive, but sometimes that might be a good thing if I am breeding for something specific. I had read somewhere that Petit was doing breeding for rust resistance in his more current hybrids (since the rust outbreak in the early 2000s).
Anyone else have any "whites" they can recommend that are also rust resistant?