From the April 13, 1943 Brooklyn Daily Eagle:

Pasadena, Cal. — California Institute of Technology today reported successful transfusions of cow and horse blood to human beings.

So far, however, only one transfusion per patient is possible. The second may prove fatal.

Considerable progress is being made, according to Dr. Dan H. Campbell of the department of immunochemistry. Substitution of animal for human blood in transfusions may not be so far off, he said.•