http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
F-106A/B pilots' abbreviated flight crew checklist
"1 October 1969, Change 4 - 1 December 1972."--P. iii.
The Cushing Library/Ragan Military copy is a gift of Ben Allen Jr. '56.