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

Northern Basin and Range GPS Network - LEWI-Mnt. Lewis P.S.
Start: 27-Jul-1997
End: 14-Nov-2022
UNAVCO Community, Davis, James, 1998, Northern Basin and Range GPS Network - LEWI-Mnt. Lewis P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5KS6PXP

Northern Basin and Range GPS Network - LEWI-Mnt. Lewis P.S.
Start: 27-Jul-1997
End: 17-Nov-2004
Davis, James, 1998, Northern Basin and Range GPS Network - LEWI-Mnt. Lewis P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5V986DK

Northern Basin and Range GPS Network - LEWI-Mnt. Lewis P.S.
Start: 17-Nov-2004
End: 14-Nov-2022
UNAVCO Community, 1998, Northern Basin and Range GPS Network - LEWI-Mnt. Lewis P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5QJ7FND