A manual for teaching model-drawing : from solid forms, the models founded on those of M. Dupuis : combined with a popular view of perspective, and adapted to the elementary instruction of classes in schools and public institutions (1843)
Williams, J. Butler, Sir, Lowry, Joseph Wilson, 1803-1879 · London : J. W. Parker · leaf 197
176 SOLID FORMS. The regular solids are five in number, viz. : The tetrahedron *, or regular triangular pyramid, having four equilateral and equal triangular faces. … The hexahedron, or cube, having six equal square faces. * The pupils (if young children, or others unaccustomed to the use of scientific terms,) should not be required to learn these names of the regular solids; nor is it even necessary that they should be mentioned to them. It will be sufficient…
Drawing · Perspective
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.