He has pursued the UFO topic since 1964. Served as an investigator and state section director for Massachusetts MUFON for ten years. Specialized in researching government documents in the late 1970s, leading to co-authoring the book "Clear Intent" (with Larry Fawcett) in 1984. Also edited the newsletter "Just Cause" for "Citizens Against UFO Secrecy" (CAUS) from 1984 to 1998. Other research has been published in the "MUFON Journal," "Flying Saucer Review" and a variety of international publications since the mid-1970s. In more recent years, he has specialized in UFO history, compiling "The New England Airship Wave of 1909" and editing "U.F.O. Historical Revue," a newsletter issued from 1998 to date. Also published the online "Union Catalog of Periodical UFO Articles," a massive listing of UFO articles published in worldwide periodical literature. Associate of "Project 1947" and the "Sign Historical Group" (SHG). Overseer of one of the larger archives of historical UFO materials in existence, having spent thousands of hours in library and archive research.

He has held memberships in the American Astronomical Society, American Association for the Advancement of Science, and continues membership as a Fellow of the the British Interplanetary Society.