Sentence:  This periodical , including weekly statistical supplements , is available for $ 4 per year from Commerce Field Offices or Superintendent of Documents , U.S. Government Printing Office , <WSD>Washington</WSD> 25 , D.C. . 
Meaning of the word marked with <WSD> tags:  the capital of the United States in the District of Columbia and a tourist mecca; George Washington commissioned Charles L'Enfant to lay out the city in 1791