Martha Washington (18)
These share definitive-series sheets with George Washington stamps at other denominations, but depict Martha Washington, not George.
Scott #00306
Scott #00556
Scott #00585
Scott #00601
Scott #00636
Scott #00662
Scott #00673
Scott #00805
Scott #00840
Scott #00849
Scott #519
Scott #7
Scott #MRC12R
Scott #MRC5R
Scott #MRC6R
Scott #PAN30571_360
Scott #cz-00007
Scott #cz-00119