Some of these you will need a perforation gauge to figure out which ones they are. If you want to have a good general idea of some of these there is mysticstamp.com they have an online catalog of us stamps, and I usually use it to get a basic idea of what I have. There is a whole series from 1910s - 1930s that look similar. Most in catalog are listed at 15 cents but some are listed in the catalog for a lot more from a couple bucks to $20 but it can depend on the watermarks and the perforations. There may be someone on here with more knowledge on these but I hope I could help point you in the right direction.
re: a few more, thanks!
Some of these you will need a perforation gauge to figure out which ones they are. If you want to have a good general idea of some of these there is mysticstamp.com they have an online catalog of us stamps, and I usually use it to get a basic idea of what I have. There is a whole series from 1910s - 1930s that look similar. Most in catalog are listed at 15 cents but some are listed in the catalog for a lot more from a couple bucks to $20 but it can depend on the watermarks and the perforations. There may be someone on here with more knowledge on these but I hope I could help point you in the right direction.