Orr, Tamra B. <br/><br/>
How did they build that? Lighthouse 
by Tamra B. Orr 
 - United States of America  Cherry Lake Publishing  2010 
 - 24 p.  col. ill.  20 cm. 
<br/><br/>Includes index 
<br/><br/> Describes how lighthouses were built in the past, their different types, what the lighthouse keeper did, and the ways in which they have been replaced today by computers. 
<br/><br/><label>ISBN: </label>9781610801140 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lighthouses
<br/><br/><label>Dewey Class. No.: </label>387.155  / ORR