Uphill Both Ways
Volume 9 - Boston 1956
These three cradles were ultimately lined up to form the bottom of the thorax, abdomen and pelvis. The cradles have been slid into place and are oriented where they sit today. I remember today that there were in fact two small external supports on this mount. A 6 inch long bar was inside of and used near the tip of each paddle to stabilize them even though there were internal supports.