Engineering paper?

Hey, our proffesor asked for a specific engineering paper, but I haven't been able to find it locally. I checked online and outside of an ebay listing or two, it's extremely difficult to even find.

I put the picture here in the post, but I would like to know if it's still even made anymore. The only engineering paper I could find locally wasn't what he wanted us to use so if you could help me find something similar to this I would greatly appreciate it. He specifically wants it to be a 10×10 or greater.