This section is from the book "Cyclopedia Of Architecture, Carpentry, And Building", by James C. et al. Also available from Amazon: Cyclopedia Of Architecture, Carpentry And Building.
Studs must be sound, with no loose knots in either edge.
There will be no wood floors in basement. Cover all joists and rafters with tongued and grooved pine or spruce boards 7/8 inch thick and not over 5 inches wide, for lining. Shakes and other imperfections will be accepted, which do not leave holes, provided the imperfection is of such a character that it will firmly hold a nail.
All finished floors of first and second stories will be of quartered white oak; and all floors above will be of edge-grain pine, all tongued and grooved and not over 2 1/2 inches face, thoroughly kiln-dried, of a quality free from shakes. Sound knots will be allowed; also imperfections which do not extend to within 1/4 inch of the wearing surface.
The finishing lumber for all rooms on first floor except kitchen, pantries, and closets, will be of quartered white oak, with bright surface, and with no imperfections which appear on the face or exposed edges; but sound knots of any size, which are finished smooth, will be allowed. All other finishing lumber of first and second floors is to be of oak, ash, or birch, of a quality specified above, but may be straight-sawed.
All shelving in closets and pantries throughout the building, may be of pine or poplar, full 7/8 inch thick.