AFTERWORD 
V 
Dr. John Mahoney remained the director of the VDRL until 1950, when he 
retired from the PHS and became New York City Health Commissioner. He 
continued to serve the PHS as an uncompensated special consultant until his 
death in February 1957. 657 
Surgeon General Thomas Parran retired from the PHS in 1948 and became 
the first head of the Graduate School of Public Health at the University of 
Pittsburgh. After his retirement, Dr. Parran continued to serve in both paid 
and unpaid consulting positions to the U.S. government. He also remained a 
leader in the international and public health fields, serving on many national 
boards and commissions. Dr. Parran died on February 16, 1968. 658 
Dr. Van Slyke left the Division of Research Grants in August 1948 to 
become director of the newly-established National Heart Institute. He served 
there until December 1952, when he became Associate Director (for extra- 
mural programs) of the National Institutes of Health. He retired from the 
PHS in 1959. He continued to serve the PHS as a paid consultant through 
1963. In 1957, he received the Albert Lasker Award of the American Public 
Health Association “for distinguished contributions to the nation’s health in 
advancing the foundations of public health progress — medical research and 
staff training.” 659 
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