Letter from Rufus Cole, the Hospital of the Rockefeller Institute for Medical Research, 66th Street and Avenue A, New York, to Joseph Barcroft, Physiological Laboratory, Cambridge University, England Noting that Dr. Binger had been granted leave to join the Peru Expedition with a sum of $1,200 to defray his expenses. Harrop is also expecting to go, so that there will be four Americans to greet Barcroft in Peru. The plans sound interesting and Binger will take any apparatus. He wishes Barcroft a profitable journey. 20 October 1921