Envelope, 1925, September 30, from United Mine Workers of America District 14 to Hearl Maxwell; Certificate; Advertisement

3 pages, Envelope from United Mine Workers of America District No. 14 to Hearl Maxwell, postmarked September 30, 1925; Certificate to Hearl Maxwell for 12 weeks course in mining from Kansas State Teachers College, Pittsburg, Kansas [no date]; Advertisement enclosure for evening classes for miners, steam engineers and electrical workers from Kansas State Teachers College [no date]