Originally Posted by Photo Engineer
The Merck Index will give you references to making it as well.
The 8th Ed lists three references. I suspect the easiest to find/decipher is:
Meldola, Foster, Brightman, J. Chem. Soc. 111, 552 (1917)
It's prepared from p-aminophenol and chloracetic acid.
I'm not a chemist, use at your own risk, yada yada.