One of Neville's students, she published some of his lectures not available elsewhere. Here is one https://www.amazon.com/Wonder-Working-Power-Imagination-Lectures/dp/1490761810
I only have the book link: The Wonder Working Power of Imagination: 1965 Lectures https://smile.amazon.com/dp/1490761810/ref=cm_sw_r_cp_api_i_FJB2SNJ7ANBYTNX8KF5D
I purchased the lecture series to read on kindle.