Showing authors WP pages before publishing?

I publish a quarterly literary magazine on the Web. I want to be able to show my authors their work online just as it will appear when published WITHOUT having it available to others, that is, I may have 15 authors per issue, and I would like to be able to send them a link so that they can see their work formatted and ready for publication. I do not want to have them register or get special status on my site as the authors come and go and have nothing to do with editing the site itself.

I imagine this is not uncommon for lit and other magazines, but I cannot figure out how to do it — no combination of DRAFT, PRIVATE, or PASSWORD publication seems to do the trick.

Anyone have a clew? Evident that I do not.

Many thanks.