- Scott Catalog (Amos Advantage)
https://www.amosadvantage.com/product/scott-catalogues-of-postage-stamps
- Scott Catalog – Amazon
https://www.amazon.com/scott-stamp-catalog/s?k=scott+stamp+catalog
- Stamp Smarter – Catalogs – https://stampsmarter.org/features/CatalogHome.html
- Stamp World (online stamp catalog)
https://www.stampworld.com/en/
- Stanley Gibbons catalog books – Amazon
https://www.amazon.com/Books-Stanley-Gibbons/s?rh=n%3A283155%2Cp_27%3AStanley+Gibbons
- Using Checklists from American Topical Association (ATA)
– https://americantopical.org/Checklist-Topics
– https://americantopical.org/The-Magic-of-Topical-Checklists - USA Stamps.com from Rowan S. Baker (UK)
https://www.usa-stamps.com
Thanks for visiting SOSC, (pronounced "so-sh") and stands for State of Stamp Collecting. Here I showcase postage stamps and postal-related material with special emphasis on USA Philatelic Catalog, US first day covers, Black culture, technology, art and space.
State of Stamp Collecting 