I was in the D.B. Weldon library at Western University on Sunday and discovered some form of cryptogram in one of the books in the 3rd floor stacks. This puzzle is really bothering me - I will pay $100 to anyone that can solve it.
I took the book International economics : trade and investment by Søren Kjeldsen-Kragh (call number HF1379.K535 2002) off the shelf and there was a plain white envelope in it. The envelope was near the front of the book; I had assumed someone was using it as a bookmark. It fell out of the book and I picked it up, while stupidly closing the book (so I'm not sure which page it was on. Roughly page 100 or so).
I opened the envelope and discovered the following note and plastic leaf. The leaf was not attached to the note in any way, I just placed it there:
All the letters are in black, except for the leaf symbol which is green. The letter appears to be colour laser printed. The physical leaf is made of plastic and has two paint splotches on it - one red, one cyan. I'm not sure what the grey pillow-shaped object is supposed to be. My friend Jordan suggested that the cyan and red paint splotches could indicate that the note is to be read with 3D glasses, something I need to try.
Chris Demwell did an analysis of the symbols, which is available here. There are over 40 different symbols, so this looks like more than a straight letter substitution. The font is Wingdings-esque, but appears to be custom made.
The back of the note contains the URL 000xyz.blog.ca which goes to a plain site titled DBW Stack (e.g. DB Weldon stack).
Let me know if you have any questions about this and I will post more info. It's bugging the heck out of me. Again, I will gladly pay $100 to anyone that can solve the mystery.