I noticed this neon sign while going for a walk the other day on Wabansia. Besides the Philosopher's Stone, they also had two signs advertising "Free Hugs."
A bit of research reveals that this is the headquarters of Give Forward. I hadn't even realized they were located in Chicago. On a personal note, I'm glad that Give Forward exists, as it provides a way for those in need to raise money.
On top of this, they are apparently Alchemists. And generous huggers.
Edit: Give Forward informs us that the sign is actually courtesy design-savvy friend Morlen Sinoway Atelier. The Free Hugs offer still stands, however.