Baitsell, J.M., Airline Industrial Relations, Graduate School of Business Administration, Harvard University, Boston, Mass, 1966, Lib. of C. # 66-22597
Chapter 6 discusses ALPA’s 1960s strategy for negotiating retirement policies and monetary packages.

Department of Labor, The Older American Worker: Age Discrimination in Employment, Report of the Secretary of Labor to the Congress Under § 715 of the Civil Rights Act of 1964, June 1965
Created as a result of the Age Discrimination in Employment Act (ADEA).

Eddy, P. et al, Destination Disaster - From the Tri-Motor to the DC-10: The Risk of Flying, Quadrangle/The New York Times Book Co., Inc., New York
Appendix C: 376 pages of worldwide aviation accident data for the 25 years between 1950 & 1975, listed chronologically, giving date, airline, aircraft involved, accident location, and number of fatalities.

Hopkins, G.E., Flying the Line, The First half Century of the Air Line Pilots Association, The Air Line Pilots Association, Washington, D.C., 1982
Chapter 21 discusses, among many other things, Quesada’s performance as Administrator of the FAA, the acrimony between ALPA and Quesada, and ALPA’s strike of American Airlines (that led to the Age 60 rule).

Hopkins, G.E., The Airline Pilots, A Study in Elite Organization, Harvard University Press, Cambridge, Mass., 1971
The Epilogue, pp. 190-95, discusses the "maturing" of the ALPA following WW-II. Their strike against TWA in 1947 demonstrated ALPA’s ability to totally shut down an airline for an extended period of time.

Johnson, George, The Abominable Airlines, The Macmillan Co., N.Y.,
Pages 37-49 provide an account of the mid-air collision between United DC-8 & TWA Constellaton over Manhattan -- and FAA Administrator Quesada's bias against ALPA & ALPA pilots.

Newton, Wesley Phillips, DELTA, The History of an Airline, Univ. of Georgia Press, Athens
Chapter 17 discusses Delta’s approach to transitioning to the jet transport — and its relationship with its pilots in the process.

Selring, Robert J., EAGLE, The Story of American Airlines, St. Marten's/Marek, N.Y.
As "favors" go, the Age 60 Rule was minor, even miniscule, when measured against Quesada’s gift to American Airlines in the early Lockheed Electra crisis — wing flutter.

Solberg, Carl, Conquest of the Skies, A History of Commercial Aviation in America, Little, Brown, & Co., Boston, Toronto
Pages 364-367 provide an account of the mid-air collision of a United DC-7 & a TWA Superconstellation over the Grand Canyon -- & Quesada's response.

Whitnah, Donald R., SAFER AIRWAYS, Federal Control of Aviation, 1926-1966, Press Building, Ames, Iowa, USA, 1966
Chapter 6 discusses the difficult decade of the 1950s that spawned first accident, then dismay, then reorganization of the CAA into the newly created FAA.