srm77virgo: welcome to the Forum. I hope that you find your time here to be productive and well-spent.
Upon quick evaluation, I agree with chasa. The US stamps you're showing are pretty common issues. Several of the US stamps are less than quality copies: poorly centered; have missing perforations (teeth); and the two green 1 cent stamps have had teeth trimmed off. Hopefully one of the US experts will look at those 1 cent greens to confirm for you. The two Canadian stamps also are very common although the cancel may be of interest.