Books by Ralph Haefner:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Haefner, Ralph, 1894-: An analysis of the student body of the Eastern Illinois State Teachers College for the year 1925-1926 (Allied Printing Trades Council 500, 1926) (page images at HathiTrust)- Haefner, Ralph, 1894-: Changes in the student body during a five-year period, 1925-1930 (Eastern Illinois State Teachers College, 1932), also by Frank Andrew Beu and Emma Reinhardt (page images at HathiTrust; US access only)
- Haefner, Ralph, 1894-: Changes in the student body of the Eastern Illinois State Teachers College during the ten-year period 1925-26 to 1935-36 (Eastern Illinois State Teachers College, 1939), also by Emma Reinhardt and Frank Andrew Beu (page images at HathiTrust)
- Haefner, Ralph, 1894-: Teaching aeronautics in high schools; a study of methods, principles and measurments (McGraw-Hill Book Co., 1947), also by American Council on Education and United States. Civil Aeronautics Administration (page images at HathiTrust)
Find more by Ralph Haefner at your library, or elsewhere.