If you really want to know where it is, it's not that hard (I was surprised it was so easy) -
When you enter Salidas del Sol, go straight and take the stairs to your right. Instead of going in the building, jump onto the rooftop to the left of the stairs. Follow the roof around (there's also a weapon repair kit by the heart) and you'll find the snowglobe in a room with five desks (lots of coins) and a Dean's Stash in it. Feel free to spread this around, just please credit me & Gamefaqs! --- "Explain to me and tell me, how you got this need for speed?" He laughed and said, "It just might be the next best thing to love!"
Not to burst your bubble or anything, but it's been known for a while where it's been. What was missing for a while was the Duck and Cover! skill book and the Wasteland Survival Guide. Now we know where the Duck and Cover! book is, and we also know that the Wasteland Survival Guide doesn't exist. --- >') Nom