I bought Aikido and The Dynamic Sphere yesterday and it states O Sensei studied 3 different Jujutsu styles as well as spear and fencing.
It looks like Ueshiba didn't box himself in with just one way/ryu and was willing to experiment eh?
Whats the difference between Aiki Jitsu and Aikido?
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jorvik
Well actually I've studied more styles than ueshiba ever did 
....and Takeda ( his teacher) only ever studied Daito-ryu.
that's a nice book Ben..i mean lovely line drawings..........the content isn't so hot though................same guys have done another book on Trad Jap ma's and again with the lovely drawings.........I've been doing TC as normal but I asked one of my sons to grab my wrist with both of his hands and resist as much as he could he is bigger than me , but I am far stronger...using technique I was able to bounce him away.really cool
....can't do it all the time but I'm getting there 
....and Takeda ( his teacher) only ever studied Daito-ryu.that's a nice book Ben..i mean lovely line drawings..........the content isn't so hot though................same guys have done another book on Trad Jap ma's and again with the lovely drawings.........I've been doing TC as normal but I asked one of my sons to grab my wrist with both of his hands and resist as much as he could he is bigger than me , but I am far stronger...using technique I was able to bounce him away.really cool
....can't do it all the time but I'm getting there 