Amendment no. 1970 Calendar no. 442 to provide interim protection of unpatented mining claims
UMass Lowell Libraries makes this material available for private, educational, and research use. While we claim no rights or authority over this material, we do ask that any publication or use of it cite UMass Lowell Libraries as the source location of the digital documents and the Center for Lowell History as the archive where the original documents can be found. While most of the materials made available are public records and free of restrictions under copyright law it is the responsibility of the user intending any commercial reproduction of material that may be subject to intellectual property restrictions to secure permissions from the appropriate parties.
Gravel, Mike, “Amendment no. 1970 Calendar no. 442 to provide interim protection of unpatented mining claims,” Paul Tsongas Digital Archives, accessed October 4, 2023, https://ptsongasuml.omeka.net/items/show/1989.