This publication contains the names of the 1,553 sires whose "proved-sire" record were tabulated by the Division of Dairy Herd Improvement Investigations between November 1, 1935, and April 1, 1937. It is expected that a similar list of proved sires will be published annually hereafter, and will include all association sires whose records were tabulated during the preceding 12 months.

This publication provides some information of a nation-wide survey to determine the importance of butter as a source of vitamin A in the diet of the people of the United States.