Re: The techniques of Budo Renshuu #50-60
#51 There are several koshi nage's in budo renshuu.
You know, I think you might be right about #50. My translation says "advancing from this left foot, steps in to the enemy's rear with this right leg and extends this right elbow toward the front of the enemy's neck"
A cross over step would make sense there. And would fit the description- Thanks Hugh!