The below books have some excellent historical references and show, over time, the progression of the community.
Note: If you are seeing broken images your browser probably has a plugin that is blocking Amazon affiliate links.
Update as of April 2021. Amazon links got broken in an update so I'm having to reassemble the links one at a time (there were over 100). Check back every friday to see what else has been added
Applications Generated by JTACs
SAM.GOV If you mess with Sam.gov and believe it sucks, Charlie Heidal wrote this application to help search it.