Signwritten Art, by A.J. Lewery
This photo is from Laird Art School 1955
Speedball Pen Manual, 1927, Fifth edition
Scan of the book on flickr
Lettering with brushes requires more skill and patience than lettering with pens. Two types of brushes are common to lettering. One type brush is red sable brushes with round ferrules and square tips ranging in size from very small (No. 1) to very large (No. 24). This brush is called a rigger. The second type of preferred brush is red sable brushes with flat ferrules ranging in size from small (1/8 inch) to large (1 inch). Choose a brush size equal to the desired width of the stroke. You may hold brushes in the same way you hold pencils or you may use a two-finger grip on the middle of the ferrule. The brush bristles should form approximately a 90-degree angle to the lettering surface. Figure 5-50 shows a brush held 90 degrees from the lettering surface with a two-finger grip.