Last picture both stamps are the same.Probably Scott 599 common precancel. The obvious one in the group is the Liberty Bell (sideways scan) of 1926. You can start a thread for each stamp, lot of stamps to digest.
Better images are needed, especially for the type III Scott 492 coil stamp and the 319 Second Bureau sheet stamp scanned sideways. The American Philatelic Society has a Quick ID service to members. A nominal fee is required to pay for the time required to examine the image and request a better one if necessary.
Good etiquette would be to image stamps oriented correctly with sharp clear images on a dark background with contrast levels set appropriately.