Victoria_Lee, you've been very helpful. One of the problems with looking for texture files is that more often than not, they live in folders that have names that are totally unrelated to the cr2. If an object is named Medusa and the tex file is also named Medusa, no problem. But a lot of the time I'll have an object named "BarberPole" and the tex file is named "abc3d". Good luck finding that.
I never thought about editing the cr2 files. Thanks a lot.

"Facts are the enemy of truth."