CoastConFan Blog shows us the elements you might expect to find in your modern 1920s investigator’s lab and attached facilities. The first four pictures are of Harry Price‘s own lab. Price was an actual psychic investigator active during the 20s, so everything you see in those photos is in-period and accessible to someone in that line of endeavor.
CoastConFan goes on to suggest some other resources your hardy group of investigators would find handy: a reference library, examining/consultation room for doctors and analysts, storage and a garage.
That may seem like a lot for amateur investigators to pull together and it is. CoastConFan presents those resources as “for a full blow[n] investigators lab that is fully funded and should be consider the absolute acme of a mid-20s lab and headquarters.” So this is a great resource for someone working for the Gilchrist Trust, a magical researcher of Cabal at Martense College, one of the Rosicrucians’ scientifically-minded Parmenideans in that era of WitchCraft, and so on. That vague itch to dig out Angel‘s organization rules has resurfaced. I could see where the acme of research labs falls in spending points.
[Link via Propnomicon.]
Held Action 
But what if you have to catch a roadrunner in the desert southwest?
None of that stuff is going to work.