[This photo (of Walt and the rabbit) was taken when Walt visited Hot Springs, Arkansas and met animals in the now defunct "IQ Zoo," an unusual organization which studied and demonstrated learned animal behaviors. The woman is Marian Breland, who operated the IQ Zoo with her husband. Here's another photo from the same day in which it appears Walt is wearing the same jacket and tie. A reporter who covered Walt's visit shared this with me. He remembered that Walt was hoping for some Hot Springs therapeutic relief from neck and back pain in late 1965; a colleague snapped the photo of him as he waited to talk to Walt. Sadly, this gentleman only took notes while he talked to Walt, and the reporter seen interviewing Walt for a radio station is now deceased. Perhaps there's a recording out there somewhere! Here's a link to a page with info about the IQ Zoo.
More info, including the original photo and Walt's follow-up letter.]