"Intention and Survival" pdf book by T.G. Hamilton
INTENTION AND SURVIVAL was published in 1942, seven years after Dr. Hamilton's death at the early age of sixty-one. It was based largely on addresses and articles he had written, and contains a wealth of photos of spirit materialization events. It also has transcripts of certain seances.
Out of print and very hard to find, this is a valuable and rare book worth reading. I'm fortunate enough to actually have a hardbound copy of it, much to my surprise, not realizing it was in my collection until recently.