Pearls ; Their Occurrence in the United States, Etc.

Various pagings The fresh-water pearls and pearl fisheries of the United States. Extracted from the U.S. Fish commission bulletin for 1897. Washington, 1898.--The World's fisheries congress, Chicago, 1893. On pearls, and the utilization and application of the shells in which they are found in the ornamental arts, as shown at the World's Columbian exposition. Extracted from the Bulletin of the U.S. Fish commission for 1893. Washington, 1894.--Production of precious stones in 1898 [and] in 1899. [