Hi Chick,

Thanks for the welcome. I supervise UCLA's Geology-Geophysics Collection, which is a part of the larger Biomedical/Science & Engineering Library. Our map room is one of the biggest in the western US, with plenty of fascinating old topos. Kanny's thread looks very interesting; I'll give it a close reading tomorrow.

Thanks for the compliment about my map, and for the pointer to the right section for it! Don't know how I didn't see that at the start.