Utility For Looking Up Post Offices

I've been using Jim Forte's post office lookup website when I want to try to identify a partial cancellation, but I was frustrated that I could not narrow it down by date.

I created a new utility for this and put it online in case it might be useful for others. I used Richard W. Helbock's United States Post Offices for the post office data.

It is hosted with PlateAI, but if it is useful, I would donate it to Stamp Smarter.

It does a bit more sophisticated pattern matching, allows restricting by dates and has a street view for post offices (including locations of DPOs).

Let me know what you think - and if anyone has a digital listing of R.R. cancellations (even scans of Remele or Towle), I could extend this to R.R. cancellations. (not sure about copyright implications).. . same for inland waterways or other markings.

https://plateai.stampplating.com/postoffices/