Mr. Isenberg's memoir of his time in foster care is included in the permanent collection of the National Holocaust Museum in Washington.
Mr. Isenberg, a 1944 graduate of Rensselaer Polytechnic Institute in New York, went on to serve in the United States Navy as an electronics technician during World War II. After returning from the war, he worked as an engineer for several companies based in New York and Philadelphia before eventually starting his own business.
For 30 years, he ran Rois Manufacturing Co., a Fishtown steel manufacturer that employed more than 200. In retirement, Mr. Isenberg split his time between Key Largo, Fla., and the Philadelphia area.
"He was a very loving man who we will miss dearly," said Patricia Isenberg, his wife of more than 40 years.
In addition to his wife, Mr. Isenberg is survived by daughters Rani, Heidi, and Lauren; a sister, Marianne Wallach; and six grandchildren.
The family asks that donations in Mr. Isenberg's memory be made to the Keys Children's Foundation of the Ocean Reef Community Foundation, 200 Anchor Dr., Suite B, Key Largo, Fla., or to the Jewish Family and Children's Service of Greater Philadelphia, 2100 Arch St., Fifth Floor, Philadelphia 19103.
Contact Joe Trinacria at 215-854-2771 or firstname.lastname@example.org.