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

Wrangells GPS Network - GLNS-Glennallen School P.S.
Start: 16-Sep-2017
End: 12-Aug-2019
Elliott, Julie L., 2020, Wrangells GPS Network - GLNS-Glennallen School P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/92QD-3322