Yarrow, Henry G., [76]

Yates, J. D., [78], [279]

Yates, Mary D., [79]

Ybarra, Francisco, [457]

Yeast powders, [346]

Yellow fever, [14], [359]

Yellow tail, [127]

Yerba Buena, [49]

Yorba, Bernardo, [169], [177], [212], [238]

Yorba, José António, [181]