Western trip planning

billseal wrote:
...Planning trip in Sept. to Wyoming, Montana, Idaho and Utah...Suggestions for ... sightseeing other than National Parks appreciated...

You could very likely spend the whole month of September in any one of the states you mention. We have spent the most time in Utah, so will start with that state. We have spent a week exploring just the UT-12 Scenic Byway between Bryce and Capitol Reef. Other scenic byways and backways worth exploring are: Hells Backbone Scenic Backway, Burr Trail, Fishlake Scenic Byway, Kane Creek Road, UT-261 (the Moki Dugway), Flaming Gorge Scenic Byway, Potash Lower Colorado Byway, and the Upper Colorado River UT-128 Scenic Byway. Many of these are best explored in other than a large RV or towing.

Here are links to some of the places we have visited and enjoyed:
Goosenecks State Park
Hovenweep National Monument
Natural Bridges National Monument
Bluff Fort
South Fork of Mule Canyon and House on Fire
Cedar Breaks National Monument
Sago Canyon
Coral Pink Sand Dunes State Park
Goblin Valley State Park
Escalante Petrified Forest State Park
Kodachrome Basin State Park
Anasazi State Park
Dead Horse Point State Park
The Valley of The Gods
Edge of the Cedars State Park
Dinosaur Museum
Utah Field House State Park
Dinosaur National Monument
Monument Valley
Arches National Park
Canyonlands National Park
Needles District
Newspaper Rock
Capitol Reef National Park
Bryce Canyon National Park
Zion National Park.

In Wyoming, you might easily spend a week or more in Yellowstone and Grand Teton National Parks. The facilities in these parks start to close after Labor Day and the closures continue throughout September. On the East side of Yellowstone, Cody has the Buffalo Bill Center Museum Complex, Old Trail Town, and the Nightly Rodeo. Thermopolis has the Hot Springs State Park, Legend Rock Petroglyph Site and the Dinosaur Museum. Devils Tower National Monument is in the Northeastern part of the state not too far North of I-90.

Both sides of Glacier National Park are worth visiting and the Going to the Sun Road is a must whether you drive it yourself, take a tour or use the Park's shuttle buses. The Little Bighorn Battlefield is worth a visit as are Fort Union, the Grant-Kohrs Ranch, Big Hole Battlefield, Nez Perce Historical Park and Bannack State Park.

Hope you have a Great Trip!!!