Iowa: Native Americans.

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(S-0008) U.S. #565 Series of 1922-25 14¢ American Indian – Hollow Horn Bear First Day of Issue: May 1, 1923 City: Muskogee, OK and Washington, DC
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(C-0007) U.S. #1734 1978 13¢ Indian Head Penny First Day of Issue: January 11, 1978 City: Kansas City, MO To lower production costs and increase output, the U.S. Postal Service experimented with this “midget” stamp. The smaller image area, which was about 1/3 smaller than usual, provided for 150 stamps per pane instead of the usual 100. This unique issue pictures the 1877 Indian Head Penny, a prized collector coin.
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(S-0009) The White Cloud (Mew-hu-she-kaw ) Chief of the Ioway Tribe U.S. #3236k 32¢ George Catlin Art First Day of Issue: August 27, 1998 City: Santa Clara, CA This stamp was part of the Four Centuries of American Art Series.
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(S-0009)