Historical clue formulations

• Wyoming city, river or mountain range — 2024-04-12
• Where the University of Wyoming is — 2021-01-22
• Gem City of the Plains — 2015-04-04
• Historic fort on the Oregon Trail — 2014-03-02
• North Platte feeder — 2011-11-12
• Seat of Albany County, Wyo. — 2010-12-22
• Fort ___ (Oregon Trail stop) — 2004-02-22
• Cheyenne's county — 2000-12-16
• Wyoming river — 2000-02-04
• '60s TV western — 1995-05-07