* Dr. Robert C. Poling’s notebook – a huge collection of reference notes on both Wernher von Braun and Jack Wagner, including newspaper articles, personal contact notes, photographs, and other memorabilia.
* Jack Wagner’s typed 33 page notes of his personal recollection of the 25 missions, written in 1943, the year of his wartime experiences.
* www.wikipedia.org – due to this and other web sites encyclopedia salesmen are a bygone relic.
* The Cleveland Press – news articles from 1943.
* The Lorain Journal – news articles from 1943.
* Mineral Tribune (Keyser, WV) – news articles.
* Bill Holbrook – personal recollections as co-founder of the Cumberland Soaring Group.
* David Poling – personal recollections as a member of the Cumberland Soaring Group.
* Tim Long – personal recollections as a member of the Cumberland Soaring Group.
* Jack & Esther McGonigale – long term members of the Cumberland Soaring Group. Esther served as the Recording Secretary of the CSG.
* Wings Over Cumberland – An Aviation History – A lengthy recap covering eight decades, beginning in the 1920’s, of aviation in the Potomac Highlands area centered on Cumberland, MD. Co-Authored by Bob Poling and Bill Armstrong.
Wings Over Cumberland 