22 various Scientific booklets. The Travels of the time Keepers by Peter Poland 1991; the American Neptune pictorial Supplement XV11 Instruments of navigation published by the Peabody Museum Salem, Massachusetts; British globes up to 1850: a Provisional Inventory by Richard Dunn and Helen Wallis London 1999; the Compleat Surveyor published to accompany a special exhibition at the Whipple Museum of the history of Science; catalogue of globes by Trevor Philip & Sons Ltd; & seventeen volumes of historical Technology Catalog 114-231, 1977-1987 by historical Technology Inc Marblehead Massachusetts.