So the Perfins are MT Pattern M257, I think. From what I found it is Manufacturers Trust Company, Brooklyn, NY.
There is a Franklin (not old) that has a really smudged cancel mark, but what is cool is it looks like the old Viking longboat. At least that is what it looks like to me, really cool.
The others are the cancellations with some saying or another, some I've been able to decipher, others not so much, but still neat and wanted to share. They are all very common from what I can tell.
There is "build your future wisely, safely U.S. Savings Bonds" partial, another is a partial of "only you can prevent forest fires" - love that one; good old smoky and "The spirit of Paul Revere Buy defense bonds" partial.
I think the conservation one is Times Plaza station, but not sure.
Some just have the dates like the doctors which is partial but you can make out 1947 at the bottom.
You guys said to keep sharing so I hope you enjoy looking.
The last five are just off cut or still attached to seam.
*Adding another one with santa and mailman on it. Too cute, love it... "Shop and mail early"