Ehmcke, F. H. <br/><br/>
Graphic trade symbols by German designers, from the 1907 Klingspor Catalog 

 -  Dover Publications,  1974 
<br/><br/><label>ISBN: </label>0486216713 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Information graphics<br/>Symbols
<br/><br/><label>Dewey Class. No.: </label>659.2 EHM