Dressed in their garnet red polo shirts emblazoned with an antique bicycle logo, Haddon Heights Historical Society members toured the friendly borough on Friday as they introduced three new historical markers to the community. Joined by mayor Zachary Houck, the historical society recognized Haddon Heights High School, the Lippincott-Kelley House on First Ave., and the Hoyle-Butcher Post No. 149 on West Atlantic Ave. for their historical significance to the borough.