[Ms. map of the earth projected on a regular tetrahedron] / G.H. Darwin. 1876 Mar. Mounted on card. Bears title 'Map of the World projected gnomonically on the faces of a regular eikosihedron'. Originally item 3219 in the catalogue of the Special Loan Collection of Scientific Apparatus at the S. Kensington Museum, 1876] Ms. map of the earth projected on a regular tetrahedron 1876
[Ms. map of the earth projected on a regular dodecahedron] / G.H. Darwin. 1876 Mar. [Mounted on card. Originally item 3218 in the catalogue of the Special Loan Collection of Scientific Apparatus at the S. Kensington Museum, 1876] Ms. map of the earth projected on a regular dodecahedron 1876