This collection is composed chiefly of professional correspondence with 117 individuals, and includes biographical information about scientists in the fields of epidemiology, public health, communicable diseases, and health science policy.

Passports, 1827, membership certificates, receipts, family letters, and 20 letters to La Roche from Thomas Dunn and Ayres Phillips Merrill on scientific, medical, and personal topics.

Includes correspondence, diaries, lab notes, photographs. Webster was a pioneering epidemiologist working at the Rockefeller Institute (1920-1943), and his collection documents this, as well as his interest in encephalitis, poliomyelitis, rabies, and resistance to infectious diseases. Other aspects of his life can be seen in his diaries and journals: diary of 1909; privately published diary of 1919, with photos, of his service in Labrador as a physician at the International Grenfell Assoc.; European journal of 1924, with photos, of Webster's honeymoon trip which was partly paid for by the Institute in order that he could meet European scientists; diary of 1929-1943; 1930 journal of a canoe trip to James Bay, with Dr. Charles C. McCoy. There is also a volume of letters concerning his death, including biographical sketches by colleagues. The contributions of his wife, Emily deForest Webster White (later married to Dr. Harold White), to Webster's work and publications can be seen in her interesting reminiscence, "Science Recollections, 1923-1971." Her own interests after Webster's death are suggested in her report of her world trip of 1964 in behalf of the Planned Parenthood Assoc. including attendance at the International Conference of Social Work, in Athens, Greece.

Working on the Army Epidemiological Board in the 1940s, Joseph Stokes, Jr. discovered the value of gamma globulin for the prevention of epidemic hepatitis. His subsequent research included immunization against influenza, protection against poliomyelitis by gamma globulin, antigenic difference between epidemic and serum hepatitis, immunization procedures in mumps, development of a vaccine against measles. His clinical focus was on the causes and prevention of childhood infectious diseases. His administrative work includes the transformation of Children's Hospital of Philadelphia and the University of Pennsylvania, School of Medicine, Department of Pediatrics. His community work consists of public health and environment control issues.