A search of the Harvard University Library digital image collection appears to reveal that group pictures of graduate students from 1988 through 2003 are missing from the collection. Obama was in the graduating class of 1991. Link to search results:http://via.lib.harvard.edu/via/deliver/executeQuery?_collection=via&searchHistoryNumber=8&searchtype=reissue#sort However, Obama is shown in this picture, of the Harvard Law Review for 1990-91. He's in the center. This is the only record in the database the comes up using the string "Obama".