From The Scottish Register of Tartans:



Utah' state tartan was commissioned by Garry Bryant, KdeB, KCR, SC. Designed by Dr. Phil Smith and adopted by a joint committee of the state's Scottish Societies and made official by Senate Resolution. A combination of the Logan and Skene tartans to honour the first two fur trappers to enter Utah. Sample in Scottish Tartans Authority Johnston Collection. Scottish Tartans Society notes add: It is the Logan Tartan #399 (original Scottish Tartans Society reference) with a white over check added and a blue substituted for a white. Ephraim Logan was an early visitor to Cache Valley in northern Utah in 1824 naming the river after his clan/family name.

Designer: Dr Philip D Smith Jr,
Tartan date: 01/01/1997

Might it not be an idea to try and contact the Utah Scottish Societies, the Utah Senate Archives or, if possible, this Dr Smith. It was designed over 12 years ago - they must have intended to make some kilts with it.

Regards

Chas