(Forgive me if this is in the wrong place)
Hi all,
The magnum opus of my collection are my (being built) ASFE albums. Recently I decided that I wanted to include Postmarks in this collection. For instance, the period from 1958-1962 when Algeria used French stamps would be represented not just by a French stamp but one with an Algerian postmark from that time period. Similarly, Cote d'Ivoire section wouldn't just include a stamp from French West Africa but a stamp from French West Africa with a Cote d'Ivoire area postmark.
I think the thing I need to make this task easier would be any resources y'all know about that list the various post offices in a place and when they were in operation. My searches are coming up empty. If I could identify partial postmarks that would expand my pool of candidates. Recommendations on finding and buying SON stamps are also appreciated.
Having described my endeavor, any other suggestions or advice are welcome. Except to give up. Need something to spend the rest of my life chasing.

Thanks in advance!