Dr. Mikao Usui:  Dr. Usui was a Christian minister in Japan , though Japanese.  He was the head of a Christian Boys School in Japan.  One day some of the students asked him if he believed in the miracles which Jesus did (healing, etc). Being a Christian minister he answered "Yes". They asked if he knew how Jesus had done this, "No" he said

With this he resolved to find the way in which Jesus had healed. This immediately set him on a journey of many years. Studying first at Christian schools in the US, for where else to learn of Jesus, but with no results.  In the Christian schools the method was not known.

It was suggested he study Buddhist writings since the Buddha had also healed. This took more years studying at a monastary in the Orient. Nowhere could he find the answers. In Japan he toured many temples asking for knowledge of how the Buddha had healed.  At each one the priests said they were more concerned with spiritual than physical well being.  In one small monastary he found some ancient Sanskrit writings from India (or perhaps Tibet).  [Diane Stein's research suggests he found the sutras to invoke the Medicine Buddha, the invoking of this Buddha is a common practice in Tibetan Buddhism]  After a few more