In addition to manufacturing carousels and inventing rides, including The Whip, he wrote a book titled The Outdoor Amusement Industry: From earliest times to the present (). Mangels is interred at Green-Wood Cemetery in Brooklyn, New York.
In addition to manufacturing carousels and inventing rides, including The Whip, he authored a book titled "The Outdoor Amusement Industry: From Earliest Times to the Present," Mangels is buried at Green-Wood Cemetery in Brooklyn, New York.