There's been debate whether Ueshiba actually studied Kito-ryu. Because it is not mentioned, I wonder what is his source of this statement.
In an interview, O Sensei himself lists kito-ryu as one of the arts he studied before he met Takeda. I can't tell when the interview was conducted or who the interviewers were:
A: When did you begin the study of martial arts?
O-Sensei: At about the age of 14 or 15. First I learned Tenshinyo-ryu Jiujitsu from Tokusaburo Tozawa Sensei, then Kito-ryu, Yagyu-ryu, Aioi-ryu, Shinkage-ryu, all of them jujutsu forms. However, I thought there might be a true form of budo elsewhere. I tried Hozoin-ryu sojitsu and kendo. But all of these arts are concerned with one-to-one combat forms and they could not satisfy me. So I visited many parts of the country seeking the Way and training, but all in vain.