For Mack and 1261Truckie - a more detailed history of the high-ladders:
The first one (reg.#455) went to Ladder 13 on 3/7/62, and was later designated HL 1, a special unit quartered with Engine 1 and Ladder 24, on 2/3/64. It was moved to the quarters of Engine 324 on 4/21/64 (for the NY Worlds fair) and later to Engine 21 on 12/19/64. The Magirus 146 foot high ladder was removed and replaced with a 100 foot Grove and assigned to TCU 712 on 11/15/69. It was finally assigned to Ladder 171 in Rockaway on 6/27/71. Was replaced by the one and only 1966 Mack 75ft tower ladder at Ladder 171 on 5/4/72. Ladder 171 was disbanded on 11/22/75.
The second, with Reg.#456, was first assigned to Ladder 24 on 3/20/62. It was later designated HL 2, a special unit, and quartered with Engine 324 (again for the Worlds Fair) on 4/24/65. It was again made into a regular apparatus and assigned to Ladder 119 on 8/14/65. After the Magirus high ladder was removed, it became TCU 731 with a 100 foot Grove Ladder on 11/16/69. It then became the regular apparatus of Ladder 164 on 7/10/71 and finally became a training unit at the Fire Academy in early 1972.