Hippie Rolls?

Across from Broadway Wine & Liquors, a trio of businesses that don't seem to have changed their appearance much in recent years. The no-nonsense looking Cronin & Phelan bar & the pizza & Chinese joints - Polito's & Sun Lok. These last two have signs that are surely of the same vintage, & maybe put up by the same sign company. They look companionable. Polito's also advertises Hippie Rolls. Hippie Rolls?  I was completely in the dark about these, but gather they're a calzone like roll, consisting of pizza dough wrapped around sausage, cheese, pepperoni & other fillings. The name may be a derivative of "eppie rolls", and eppie may be short for pepperoni. It's all a little mysterious. The rolls were apparently popular in the 60s & 70s, & maybe that's how the hippie part came in.  I've never seen them on a pizzeria sign before, but maybe they're on signs all over the place and I've just been inattentive.  I'd love to know if other places feature them.  And are they still on the menu at Polito's?  I was in a bit of a hurry when I passed by here last weekend, but I'll go back & find out soon.