For anybody interested in Colt Firearms from the company's inception through the middle 1980s should buy "Colt, An American Legend"
http://www.amazon.com/s/?ie=UTF8&key...sl_8bwavpzy8_e
This tome covers all aspects of Colt firearms, including historically significant presentation and engraved guns.
The back of the book has a comprehensive production history of every type of gun the company produced, including military contracts. The data also comes from Colt's company ledgers.
They are easy tables to use and much handier than internet searches.