Sentence:  The opinion continues here that with a 162 - game schedule , pitching spread thin through a 10 - team league and a most inviting target in Los Angeles ' Wrigley Field Jr. , Mantle just might break the most glamorous record on the <WSD>books</WSD> , Babe Ruth 's 60 homers of 1927 . 
Meaning of the word marked with <WSD> tags:  a compilation of the known facts regarding something or someone