For Sugano Sensei, OP will need someone from USAF ER to address the issue....
You may want to go to http://www.aikidoonline.com/
and contact someone there.
But since the OP is in Australia I am sure that there are as many if not more people in the Australia Aikikai that can provide information on Sugano Sensei and his weapons. While Sugano Sensei was an instructor at NY Aikikai and a respected Shihan by everyone in the USAF, in my experience, most USAF Eastern region instructors consider themselves to be primarily students of Yamada Shihan or Kanai Shihan.
Cliff: I don't know anything about Kashima Shinto Ryu, but I believe that the kumitachi that Chiba sensei teaches come from O sensei. He learned them from Osensei and Saito sensei in Iwama. I thinks he later made some adjustments to accommodate the way his own Bukiwaza had developed, which included Iaido. Saito sensei, I believe, claimed that the way he presented them was exactly as O sensei taught them.