Hoffman, John Nathan. <br/><br/>
Girard estate coal lands in Pennsylvania, 1801-1884 
[by] John N. Hoffman. 
 - Washington  Smithsonian Institution Press  1972. 
 - 86 p.  illus.  28 cm. 
 - Smithsonian studies in history and technology  no. 15 .
 - Smithsonian studies in history and technology  no. 15. .
<br/><br/> 920319 
<br/><br/><label>LCCN: </label>72002909 //r86 
<br/><br/><label>Subjects--Personal Names: </label><br/>Girard, Stephen 1750-1831. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mines and mineral resources--History.--Pennsylvania<br/>Coal mines and mining--History.--Pennsylvania
<br/><br/><label>LC Class. No.: </label>TN24.P4  / H64 
<br/><br/><label>Dewey Class. No.: </label>333.8/2