There is a reference section of UNM history books that you should consult:
Dorothy B Hughes, Pueblo on the Mesa: The First Fifty Years at the University of New Mexico is originally from 1939 (and a typewriter), but a worthwhile source if your place is old enough to be included. It’s especially great for general campus info, but not super great as reference work (no index).
BUILDINGS CHANGE NAMES. Records documenting its construction and early days may not refer to it by the modern name you know, so make sure you’re searching all relevant names or alternate names. What is now (obviously) Mesa Vista Hall was most commonly known as the 400-man dorm when it was built in 1950.
Remember that you are basically never searching the full text of archival documents (as we’ve talked about in the course), which for the most part have no digital existence. Someone has collected this stuff and labeled it, so items that pertain to two buildings may tagged or filed in only one place. Be creative in your searching!
When you get your box, poke around at first to get a sense of what’s there. It’s pretty fun just to see the documentary history at your fingertips. BUT, as you start looking through the folders, be systematic! Take note of what you’ve seen, what you haven’t, what’s interesting, what’s not. Think about the story you want to tell!
Your essays are pretty short, but you still need to have a sense of the whole history to figure out what to include or focus on, so you can’t just look through enough material to write 600 words. Well, you can, but such laziness will be reflected in your low grade for the assignment.
Always be thinking about the story you want to tell! This will help you decide what to focus on.