Thoreau checks out A memoir of Sebastian Cabot by Richard Biddle and Transactions of the American philosophical society, held at Philadelphia, for promoting useful knowledge from Harvard College Library (Companion to Thoreau’s Correspondence, 291).

Concord, Mass. Thoreau also copies two 16th century maps, entitled “Americae sive novi orbis, nova descriptio” and “Norumbega et Virginia 1597” (Henry David Thoreau papers. Special Collections, Concord (Mass.) Free Public Library).