20 books
The Stars and Constellations: How and When to Find and Tell Them (Large Text Classic Reprint)
The Physical Geography and Meteorology at the South Atlantic Together with Sailing Directions
The Yachtsman's Handybook for Sea Use; And Adapted for the Board of Trade Yachting Certificate
Short Notes and Sailing Directions on Making Passages; To Accompany a Chart of the South Atlantic.