Arthur Clarke's "The Sentinel" text version is online

QuasarDragon links this Hairy Green Eyeball post that attaches 7 JPEG files containing the text of the story. JPEGs appear to be photographed from a book. MP3 of this story was already online.

This is a very famous story. Among the most reprinted, & one of the key stories they went into "2001 A Space Odyssey" novel & the movie.