Books by Helen Lois Koch:
Books in the extended shelves:
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Koch, Helen Lois, 1895-: The influence of mechanical guidance upon maze learning (Chicago, Ill., 1923) (page images at HathiTrust)- Koch, Helen Lois, 1895-: Texas educational survey report (Austin, Texas : Texas Educational Survey Commission, 1924), also by Texas. Educational survey commission, Ben Johnson, Stella Palmer, Nugent E. Fitzgerald, George Frederick Zook, F. L. Kelly, Clyde Milton Hill, Lotus Delta Coffman, Clarence Truman Gray, Orville Gilbert Brim, Margaret Eleanor Noonan, Rietta Simmons, Paul Jehu Kruse, Benjamin Floyd Pittenger, Harry Bruce Wilson, John Leslie Tennant, Ė. A. Petėrson, Andrew Clarkson Parsons, Charles Hubbard Judd, Norman Frost, Leo Mortimer Favrot, John Oscar Creager, Thomas Dudley Brooks, and George A. Works (page images at HathiTrust)
Find more by Helen Lois Koch at your library, or elsewhere.