U.S Stamps Issues 501-750
U.S. Postage Stamp Number 631 Used1½ ¢ Harding – yellow brown
U.S. Postage Stamp Number 739 Unused3¢ Wisconsin- U.S. Postage Stamp Number 504 Used5¢ Washington – blue
U.S. Postage Stamp Number 632 Unused1¢ Franklin (1927) – green- U.S. Postage Stamp Number 739 Used3¢ Wisconsin
- U.S. Postage Stamp Number 506 Unused6¢ Washington – red orange
U.S. Postage Stamp Number 633 Unused1½ ¢ Harding (1927) – yellow brown- U.S. Postage Stamp Number 740 Unused1¢ Yosemite
- U.S. Postage Stamp Number 506 Used6¢ Washington – red orange
- U.S. Postage Stamp Number 633 Used1½ ¢ Harding (1927) – yellow brown
- U.S. Postage Stamp Number 740 Used1¢ Yosemite
- U.S. Postage Stamp Number 508 Unused8¢ Franklin – olive bister
U.S. Postage Stamp Number 634 Unused2¢ Washington Type I – carmine
U.S. Postage Stamp Set Number 740-749 Unused1934 National Parks Series – 10 vars
U.S. Postage Stamp Number 634A Used2¢ Washington Type II (1928) – carmine
U.S. Postage Stamp Number 741 Unused2¢ Grand Canyon- U.S. Scott No. 509 Unused9¢ Franklin – salmon red
U.S. Postage Stamp Number 635 Unused3¢ Lincoln (1927) – violet- U.S. Postage Stamp Number 741 Used2¢ Grand Canyon
- U.S. Scott No. 510 Used10¢ Franklin – orange yellow
U.S. Postage Stamp Number 511 Unused11¢ Franklin – light green- U.S. Postage Stamp Number 635 Used3¢ Lincoln (1927) – violet
U.S. Postage Stamp Number 742 Unused3¢ Mt. Rainier
U.S. Postage Stamp Number 512 Unused12¢ Franklin – claret brown
U.S. Postage Stamp Number 636 Used4¢ Martha Washington (1927) – yellow brown- U.S. Postage Stamp Number 742 Used3¢ Mt. Rainier
- U.S. Postage Stamp Number 512 Used12¢ Franklin – claret brown
U.S. Postage Stamp Number 637 Unused5¢ T. Roosevelt (1927) – dark blue
U.S. Postage Stamp Number 743 Unused4¢ Mesa Verde
U.S. Postage Stamp Number 513 Used13¢ Franklin – apple green- U.S. Postage Stamp Number 637 Used5¢ T. Roosevelt (1927) – dark blue
- U.S. Postage Stamp Number 743 Used4¢ Mesa Verde
U.S. Postage Stamp Number 515 Unused20¢ Franklin – ultramarine
U.S. Postage Stamp Number 638 Unused6¢ Garfield (1927) – red orange
U.S. Postage Stamp Number 744 Unused5¢ Yellowstone- U.S. Postage Stamp Number 515 Used20¢ Franklin – ultramarine
- U.S. Postage Stamp Number 638 Used6¢ Garfield (1927) – red orange
- U.S. Postage Stamp Number 744 Used5¢ Yellowstone
U.S. Postage Stamp Number 517 Used50¢ Franklin – red violet
U.S. Postage Stamp Number 639 Unused7¢ McKinley (1927) – black
U.S. Postage Stamp Number 745 Unused6¢ Crater Lake
U.S. Postage Stamp Number 518 Used$1 Franklin – violet black- U.S. Postage Stamp Number 639 Used7¢ McKinley (1927) – black
U.S. Postage Stamp Number 746 Unused7¢ Acadia
U.S. Postage Stamp Number 519 Unused2¢ Washington – carmine
U.S. Postage Stamp Number 641 Unused9¢ Jefferson (1927) – orange red- U.S. Postage Stamp Number 746 Used7¢ Acadia
U.S. Postage Stamp Number 525 Used1¢ Washington – gray green- U.S. Postage Stamp Number 641 Used9¢ Jefferson (1927) – orange red
U.S. Postage Stamp Number 747 Unused8¢ Zion