A Bucks County auto racing business: Fighter’s Heaven, the training camp of heavyweight boxing champ Muhammad Ali; Parker’s Landing petroglyphs, a series of Native American rock engravings at one of the most significant archaeological sites in Pennsylvania; and Sylvania Electric Products, a company that produced proximity fuzes for artillery shells during World War II are among the subjects of the 24 new Pennsylvania Historical Markers approved by the Pennsylvania Historical & Museum Commission (PHMC).
Holbert Racing of Warrington Township, started in 1951 by Bob Holbert and continued with his son Al, and the internationally successful racing business ran until 1988. Specializing in racing Porsches, the father and son team amassed 10 race series wins between them and numerous victories in the 24 Hours of Lemans. Bob Holbert is considered a legend of American racing and Al Holbert is in both the Motorsports Hall of Fame of America and the International Motorsports Hall of Fame.
The Holbert base was a Porsche-Audi dealership just south of Doylestown on Route 611.
The new markers, selected from 48 applications, will be added to the nearly 2,300 familiar blue-with-gold-lettering signs along roads and streets throughout Pennsylvania.
