For some unusual leads on Tesla information, you may want to contact Ira Flato, of National Public Radio's Science Friday. He did an hour-long call- in on Tesla several months (six??) ago. He obviously did a lot of background work in preparation for the show but also received some very interesting calls. If I recall correctly, I think he had some Tesla family members on line throughout the show as well as the author of a recent biography. He may be able to put you in touch with family who would know the whereabouts of some of the materials you seek. Elana Benamy, Collection Mgr., Invert. Paleo., Acad. Natural Sciences of Phila. [log in to unmask]