Vintage Yellowstone Postcards Lot of 2 UNPOSTED No Writing Old Faithful Geyser

Lot of 2 vintage postcards. I believe they are 70s era. Approximately 4 in x 6 in.  Wavy Scalloped edges. Both cards show yellowstone national park.  Upper Falls of the Yellowstone River & Old Faithful Geyer & InnCondition: unposted, no writing, some yellowing from age, some wear on edges