So I kinda got bored at work and did a little scribble. Yes, I have heard of and adore the work of Michael McGinnis and yes, that 19 in the url does indicate that there are 18 others. Most of them are slightly more orthogonal than that one.
Wow that’s certainly impressive! How long did it take you to do it? By the looks of it, it sure did take a long time… you must have had a lot of free time, that’s for sure! xD Good stuff!