UPDATE: Will Corbett shared this 1959 ‘Jeep’ Cavalcade “Rush to the Rockies” Centennial event brochure with Gone-Gpn on Facebook. It is a tri-fold brochure that opens up with a full-page on the back. I’ve pieced together the back page from two separate pages, so it isn’t quite a perfect example.
This is the front of the brochure:
This is the back of the brochure:
This image shows the back of the brochure when fully opened:
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Originally Posted October 18, 2018:
This information covers the 1959 Jeep Cavalcade “Rush to the Rockies” Centennial. The 1959 Cavalcade was part of the 100th anniversary of the John Gregory’s Central City May 1859 strike, which led to a wave of hopeful miners descending upon what would become the Denver area. The Centennial was celebrate throughout Colorado through a variety of celebrations and merchandise (like these bottles and this Centential booklet).
A subsequent ‘Jeep’ Cavalcade was organized for 1960, as shown in this brochure.

Photo from the Denver Post. Both Life Magazine and the Denver Post covered the event. Note the white wagon above. It appears in a couple of the color photos below.
Some folks attached these flags to their rigs.
Here are photos of the 1959 Jeep Calvacade that appeared in the December 28, 1959, issue of Life Magazine (the one below).