IF YOU HAVE INFORMATION ON THE MURDERS OF EDWARD AND MARGUERITE VOGENBERGER- PLEASE CALL BUCK COUNTY DETECTIVES AT 215-348-6354
Buy Killer in the House
The Abt family, courtesy of Kathryn Canavan
Front: Kathy, Johnny, Margie;
Back Jack, Clifford, Michael and Peggy Abt
Diagram of the Abt House on Fleetwood Avenue, Trevose, P.A.
ARTICLES
Jan. 18, 1975: Engagement announcement of Michael Abt and Candida Klesh- Laminated, this was on the piano, next to the 17-inch space where the killer hid.
Standard Speaker Newspaper
Tallahassee Democrat, March 15, 1976
Delaware County Daily Times, March 18, 1976.
The Indiana Gazette, March 23, 1976
The Times, March 23, 1976
Daily News, Sept 12, 1976
The Times, Trenton, NJ, March 18, 1976, Page 1
The Times, Trenton, NJ March 18, 1976 Page 2The Times, March 31, 1976
Evening Times, March 15, 1976
The Mercury, Oct. 27, 1975
Philadelphia Daily News, March 18, 1976
Republican and Herald, March 19, 1976
Patriot News, March 21, 1976
The Mercury, Oct 27, 1975
Philadelphia Inquirer, June 20, 1976
Intelligencer Journal, July 22, 1976
The Reporter, July 3, 1978
Philadelphia Daily News, Nov. 9, 1982
Philadelphia Inquirer, Oct. 19, 1999
SOURCES
1976 Langhorne Murder, Bucks County History, 2026.
Anthony Burton, Daily News, New York, Sept. 12, 1976.
Burr Van Atta & Charles Layton, Six are found shot to death, Tallahassee Democrat, March 15, 1976.
Buzz Cressman, Death Sentence: Bucks murderer 'finds God'-- Also gets 6 life terms, The Morning Call, June 14, 1978.
Charlotte Lillis, The link between OCD and paranoia, Medical News Today, Jan. 31, 2025.
Commonwealth. v. Geschwendt, Justia.com, Dec. 31, 1982.
David Bittan & Robert Joffee, Accused killer's past no warning of danger, The Times, Trenton, NJ, March 28, 1976.
David Bittan, Abts seek a new life in house where six died, The Times, March 31, 1976.
Edward Rutan Vogenberger, FindaGrave.com, 2026.
Emily C, Fried Mushroom with Smoke Paprika Remoulade, Food52.com, 2026.
FMC Corporation, Wikipedia, 2026.
George Geschwendt, Appellant, v. Joseph M. Ryan, Superintendent (warden); and the Attorney General of the State of Pennsylvania: Ernest Preate; and the District Attorney Of Bucks County, U.S. Court of Appeals, Third Circuit, Justia.com, 1992.
Kathryn Canavan, 2026.
Kathryn Canavan, Killer in the House: Ten Days of Terrors in a Pennsylvania Suburb, Brookline Books, Feb 2026.
Lakshit Jain and Tyler J. Torrico, Paranoid Personality Disorder, National Library of Medicine, June 5, 2024.
Steven Boman, Top U.S. Court rejects appeal in Bucks Murderers, Philadelphia Inquirer, Nov. 13, 1992.
Tom Waring, Survivor recalls devastating loss of family, 50 years later, Northeast Times, March 17, 2026.
Tracey Marks, Paranoid Personality Explained, YouTube.com, 2020.
Trevose Family Buried, Delaware County Daily Times, March 18, 1976.