- Author: John Allan, John Butterworth, Myrtle Langley
- Language: Czech
- Year: 1993
- Author: John T. Moore Richard H. Langley
- Language: English
- Year: 2022
- Author: John Allan, John Butterworth, Myrtle Langley
- Language: Czech
- Year: 1993
- Author: Denise DiPasquale (editor), Langley C. Keyes (editor), James W. Rouse (editor), David O. Maxwell (editor)
- Language: English
- Year: 2017
- Author: Ernest F. Langley (editor)
- Language: English
- Year: 1915
- Author: Susie Ella Langley
- Language: English
- Year: 2020
- Author: Lester D. Langley
- Language: English
- Year: 2010
- Author: Emile J. Langley, Roger B. Knowles
- Language: English
- Year: 2012
- Author: John T. Moore Richard H. Langley
- Language: English
- Year: 2023