﻿8 CATALOGUE OV PREHISTORIC WORKS, 



Special efforts were made to locate definitely all ancient works, 

 mounds, graves, ])ictograplis, etc., including those to wliicli only incom- 

 plete and casual reference bad been made by earlier travelers and 

 writers. All the material thus obtained has been incorporated in the 

 present volume. 



Not only are the existing works included in the list, but also, when- 

 ever thoy could bo definitely located, those which have been obliterated. 



In explanation of some items in this catalogue which seem to be 

 indefinite, as Avhere the only locality mentioned is the county and 

 State, it may be said that it was thought best to preserve these refer- 

 ence.^, imperfect as they are, as they may be of some use to future 

 explorers. There are few cases of this kind. 



There will be found many references in the more general works to 

 the noted antiquities, such as the Maiietta and Newark groups, which 

 are not quoted here, as they are but abbreviarions of the accounts 

 given in the authorities named. 



In order that the list maj' occupy as little space as i)ossible, the titles 

 of i^ublications frequently referred to are much abbreviated, and need 

 explanation, which is given below. 



Map No. 1 is presented to show the geographical distribution of 

 antiquities throughout the mound area of the United States east of the 

 Ivocky Mountains, but has no reference to the types. The State and 

 county maps introduced show the distribution of the leading types. 



I desire to acknowledge the assistance 1 have received from Mrs. V. 

 L. Thomas in the preparation of the list. A very large part of the 

 labor of its compilation has fallen to her while acting as my secretary. 



