Sentence:  These narratives of coarse action and crude language appeared first in local newspapers , as a rule , and later found their way between book <WSD>covers</WSD> , though rarely into the planters ' libraries beside the morocco bound volumes of Horace , Mr. Addison , Mr. Pope , and Sir Walter Scott . 
Meaning of the word marked with <WSD> tags:  a covering that serves to conceal or shelter something