Preprint of the paper pubiished in the IEEE Annals of the History of Computing. The file at the URL also includes additional notes that are not included in the published paper. Please read the cover page of the file.
Archive of Interleaf materials.
Author copy of the paper returned from the IEEE. This definitely has errors that were fixed for the published version. It does not include the additional notes that are posted at history.computer.org/annals/dtp/interleaf/anecdote-additional-notes.pdf.