Forbes, A., & Eastman, R. M. (1948). Yankee ship sailing cards: Presenting reproductions of some of the colorful cards announcing ship sailings in the days when Boston ships and Boston men were known in every port of the seven seas. Boston: State Street Trust Co..

Forbes, Allan, and Ralph Mason Eastman. Yankee Ship Sailing Cards: Presenting Reproductions of Some of the Colorful Cards Announcing Ship Sailings in the Days When Boston Ships and Boston Men Were Known in Every Port of the Seven Seas. Boston: State Street Trust Co., 1948.

Forbes, Allan, and Ralph Mason Eastman. Yankee Ship Sailing Cards: Presenting Reproductions of Some of the Colorful Cards Announcing Ship Sailings in the Days When Boston Ships and Boston Men Were Known in Every Port of the Seven Seas. Boston: State Street Trust Co., 1948.