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

Peatland Minnesota GPS Network - BLEA-Lawn East A P.S.
Start: 13-Jul-2007
End: 08-Jul-2012
Glaser, Paul, 2007, Peatland Minnesota GPS Network - BLEA-Lawn East A P.S., UNAVCO, GPS/GNSS Observations Dataset, 
https://doi.org/10.7283/T5N8783S