First of all Welcome to Net54baseball.com. I hope you enjoy your stay.
I would be very surprised if anyone does know anything about these 2 cards. There are a ton of amateur and other baseball postcards from the early 1900's that have no real significance besides them looking neat. So, unfortunately I have nothing to add except I do like the little doggie on the one card. I really like mascots and animals mixed in with the teams. Not to go too off track, as I am sure there won't be 400 posts in this thread, here is an animal on a pin I just had to have...

. Good luck in your information quest.