Proudfoot, W. B.; <br/><br/>
The origin of stencil duplicating/ 
by W. B. Proudfoot. 
 - London:  Hutchinson,  1972. 
 - 128 p. :  ill., facsims., ports ;  24 cm. 
<br/><br/>Bibliography: p. 118-121. 
<br/><br/><label>ISBN: </label>0091092809 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Copying processes--History.<br/>Stencils and stencil cutting--History.