Marcella,
I understand that your question is about conservation of these aging mounts, however, there is an important caution about using older mounts for interpretative programming. Arsenic was sometimes used in the taxidermy process, and may remain in the mount. Given the age of the mounts, it is unlikely that the Nature Center knows or can find out the taxidermy process used.
Thus, participants should not be permitted to touch them. The Outdoor Education Center at which I worked installed shelving above children's reach for their smaller mounts, and placed other exhibit items in front of the bear and mountain lion to keep participants at arm's length.
This caution should also be considered by anyone doing conservation on the mounts.
Mary Ann Gabriel
Collections Management Specialist
Parker, CO
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