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.
Face brick will be used for the visible surfaces of the exterior brick walls and chimneys. Each course will alternate headers and stretchers, and the facing and backing are to be carried up together and of such size brick that the headers of every fifth course will bond. The header of all other courses may be half-brick. The joints will be approximately 1/2 inch thick, and trowel-pointed as the work is laid; and all mortar must be kept off the face.