I can't remember who it was that was looking for deer tendon (for making bow-strings I think?) but I might be able to help them with their quest very soon if they get in touch with me. I've been talking to a guy I do a little work for and he should soon be letting me have various bits of deer that will prove most useful. He owns a pest control and stalking business, so he regularly has to clean a number of deer. I should have antlers, skins and tendons/ sinew coming to me in the next few weeks. I'll be tanning the skins for use in various projects, hopefully using the antlers for handles, toggles and the like as well as for flint knapping (when I learn how), but I'm not interested in bow-making so if any of you want a tendon or two, let me know.