Okay, so I started Broken Steel, and immediately after awaking from my coma, I told Fawkes to go back to the Museum of History. Later on, I head there to go and recruit him again and he isn't there.

I've searched everywhere. Project Purity, the Citadel, Vault 87, Raven Rock... But Fawkes is nowhere to be found. I travelled to both the Pitt and Point Lookout. Nothing. I even waited two in-game months to no avail. Do any of you have any clue how to find Fawkes? Please help.