http://www.gutenberg.org/etext/6539
gutenberg does have the complete works of EA POE. which includes all storys included in tales. there is a google book version of this exact work though.
google also has the case book.
and shirley is avialable all over the place too.
if gutenberg dont have it. ADD IT! im pretty sure its an open community poject. the texts are available, copy and paste.