This kind of stuff pisses me off, yesterday we went to B&N, I picked up this magazine because I was waiting for something and I noticed an error at page 29, unacceptable for a magazine that costs $30.

https://images2.imgbox.com/3c/4a/lyUvpQPL_o.png it shows Debian was released before Slackware, incorrect: Slackware = July 1993 and Debian = August 1993.

You can also double check here:

https://upload.wikimedia.org/wikipedia/commons/1/1b/Linux_Distribution_Timeline.svg

https://github.com/FabioLolix/LinuxTimeline/releases

And here:

https://en.wikipedia.org/wiki/Slackware

https://en.wikipedia.org/wiki/Debian

Etc.etc., who doesn't this stuff anyway come on.