[J. Reuben Clark]
Asked Bro. Wonnacott if the LDS Hospital had its own blood bank; he said that they did ... they screen the donors very thoroughly; they use no colored blood; Dr. Madsen is no longer with them; the girl who had been with the Hospital for 25 years is directing the Bank; Pres. Clark referred to his conversation with Dr. Madsen. Mr. Wonnacott confirmed Pres. Clark's understanding of what he thought he got from Dr. Madsen, that there were ways of tracing family relationships through blood; he did not remember that the question of negro blood was discussed. Bro. Wonnnacott reiterated that they never give negro blood to a white patient; that now they claim it does not make a bit of difference from whom the blood comes; the blood changes over a certain period of time.
[The Diaries of J. Reuben Clark, 1933-1961, Abridged, Digital Edition, Salt Lake City, Utah 2015]