A graduate of Carthage College and the Colorado School of Mines, Keightley spend most of his working life in England as a petroleum engineer and was an avid philatelist.
Gregorian calendar | Hebrew calendar | Julian calendar | Calendar of saints | Islamic calendar | calendar | Google Calendar | Royal Philatelic Collection | Japanese calendar | Chinese calendar | Calendar Girls | Calendar | Pirelli Calendar | Maya calendar | Malayalam calendar | lunar calendar | Korean calendar | Javanese calendar | Gregorian Calendar | French Republican Calendar | Calendar date | American Philatelic Society Hall of Fame | Tridentine Calendar | The Newgate Calendar | Solar calendar | solar calendar | Julian Calendar | Jenny Calendar | General Roman Calendar of 1962 | Ethiopian calendar |