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

Yellowstone Caldera GPS Network - NRWY-Norris Junction, WY P.S.
Start: 11-Sep-2004
End: 14-Nov-2022
UNAVCO Community, 2003, Yellowstone Caldera GPS Network - NRWY-Norris Junction, WY P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5FQ9TZ0

Yellowstone Caldera GPS Network - NRWY-Norris Junction, WY P.S.
Start: 11-Oct-2003
End: 11-Sep-2004
Smith, Robert B., 2003, Yellowstone Caldera GPS Network - NRWY-Norris Junction, WY P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T59Z9372

Yellowstone Caldera GPS Network - NRWY-Norris Junction, WY P.S.
Start: 11-Oct-2003
End: 14-Nov-2022
UNAVCO Community, Smith, Robert B., 2003, Yellowstone Caldera GPS Network - NRWY-Norris Junction, WY P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5KH0KNT