I probably have about 100-200 sheets of each size. The 35mm is in strips or 5 or 6 on a page; 35mm mounted takes 24 to a page; 120 has 3 strips to a page and 4x5 has 4 pockets to a page. I also have about 1000 Kraft 4x5 film envelopes. I'd like to sell it all to one person or at least all of one size to a single buyer. PM me if interested and I'll give exact counts of the size you want.
All the 4x5 pages, envelopes and sleeves are sold--I still have archival 35mm mounted takes 24 to a page; 120 has 3 strips to a page