Peter's photography has appeared in over 50 magazines as well as repeatedly on NBC's Today Show. He has contributed exclusive or primary photography for nearly forty books and his work is regularly exhibited in galleries here and abroad. Most recently his work was added to the permanent collection of the National Museum of American History at the Smithsonian, and in 2003 his photography as well as his Island Institute work was awarded an Honorary Doctor of Laws Degree at Colby College.
Peter co-founded the Island Institute in 1983 and served as its Executive Vice-President until his semi-retirement from the Institute in 2009. He currently serves the Institute as Director of Creative Projects and has contributed most of the photography and served as art director for the Institute's Island Journal since its inception.
In 2011 Peter founded Ralston Gallery at 23 Main Street, Rockport. The gallery exhibits Peter's photography as well as limited edition prints by Andrew and Jamie Wyeth. He is currently working on a major book about Penobscot Bay and spends as much time as he can out and about photographing for that endeavor. In addition to leading a workshop at MMW each year, Peter coordinates with the school to lead a workshop aboard expedition trawler, Wanderbird, along the southern coast of Newfoundland.
Peter lives with his wife Terri and their children on a property abutting the campus of Maine Media Workshops.