Original editions vs Edited

I just read The Fall of the House of Usher on this site https://www.ibiblio.org/ebooks/Poe/Usher.pdf. Later, I found out it is different that the original Edgar Allen Poe short story that is posted on Project Gutenberg and other sites. Can you give information on the version that you posted. Did Poe publish different versions of this story? Do you typically post versions that are edited for content for certain audiences?

@John_Mester The collection maintainer would have information about which versions of books they used. This collection, and this book, have references to The Online Books Page. The book document also includes ‘This PDF ebook was created by José Menéndez.‘ This information may help in trying to find the creator/maintainer of this document and collection.