The following information obtained from UNAVCO's online DOI system:
(https://www.unavco.org/data/doi/search/search.html)

Wasatch GPS Network - LTUT-Little Mountain, UT P.S.
Start: 07-Oct-2002
End: 14-Nov-2022
UNAVCO Community, Smith, Robert B., 2002, Wasatch GPS Network - LTUT-Little Mountain, UT P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5M906ZJ

Wasatch GPS Network - LTUT-Little Mountain, UT P.S.
Start: 07-Oct-2002
End: 18-Apr-2008
Smith, Robert B., 2002, Wasatch GPS Network - LTUT-Little Mountain, UT P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5R20ZNF

Wasatch GPS Network - LTUT-Little Mountain, UT P.S.
Start: 18-Apr-2008
End: 14-Nov-2022
UNAVCO Community, 2002, Wasatch GPS Network - LTUT-Little Mountain, UT P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5VQ310C