Keywords: Point of Rocks signal tower.jpg Point of Rocks Maryland Transferred from http //en wikipedia org en wikipedia; transferred to Commons by User Gfoley4 using http //tools wikimedia de/~magnus/commonshelper php CommonsHelper <br/> Original text I created this work entirely by myself 8 Aug 2008<br/> 2008 11 10 original upload date Grayghost01 talk Original uploader was Grayghost01 at http //en wikipedia org en wikipedia Released into the public domain by the author en wikipedia Grayghost01 Original upload log page en wikipedia Point_of_Rocks_signal_tower jpg 2008-11-10 05 45 Grayghost01 1536×1024× 1278124 bytes <nowiki> Point of Rocks Signal Tower I created this work entirely by myself 8 Aug 2008 ~~~ </nowiki> Baltimore and Ohio Railroad CSX Transportation Railway signals in the United States Rail transport in Maryland Vertical color light signals |