John O'Brien has written at least 20 books. Their most popular book is Who Was Marco Polo? with 2 saves with an average rating of 4⭐.
1793 • 1 Reader • 156 pages
1 Reader
2017 • 1 Reader
1997 • 1 Reader • 3
88 Who Was . . . ? Series
2014 • 1 Reader • 114 pages • 4
1 Reader
2002 • 320 pages
1980 • 125 pages
1998 • 154 pages
2010