Legion patrol notes
In Aurelius of Phoenix's office inside of his desk in Cottonwood Cove, within the top floor of the Cottonwood Cove HQ. It can be given (together with the Legion raid plans) to First Sergeant Astor as good intel for NCR fame.
The notes will remain 'essential' in your inventory if you stole them before Eye for an Eye quest and decide after to give the NCR radio bug to Aurelius of Phoenix. On the PC version it is possible to make them 'non-essential' by using the console command setquestobject 1349c2 0.