Thompson - Invisible Man - New paperback or softback - X555z

Opara - Invisible Man and Other Realities - New paperback or softback - X555z

Allen - Making the Invisible Visible - New paperback or softback - X555z

Stombaugh - God The Invisible Man - New paperback or softback - X555z

Leadbeater - Man Visible and Invisible .. - New hardback or cased book - X555z

Curran - Invisible Lead - New paperback or softback - X555z

Leadbeater - Invisible Helpers - New paperback or softback - 55 - X555z

Leadbeater - Invisible Helpers - New paperback or softback - 59 - X555z