Forums SEASHELL-COLLECTOR

I don't think I have serious collector quality shells but would like help with the names, I've looked at a lot of pictures and am still a little lost so I truly appreciate the help. Probably over 1000 shells, many are little. These maybe are clams?
https://i.imgur.com/dEPIGHm.jpg
https://i.imgur.com/hDmUErH.jpg
https://i.imgur.com/qw2cOLO.jpg

1 bear paw clam, Hippopus hippopus
2 polished fresh water mussels, species unknown