Mobile vendors suggest department stores on wheels

They remind me of my Uncle Herman, who was a butcher married to one of my grandmother’s four sisters.

In my mind’s unreliable eye, I remember him working from a pushcart outside a market in Boston’s Haymarket Square.  There was an associated store just behind him as well, and I’m pretty sure it had sawdust on the floor and butchers in bloodied white aprons.

I know Uncle Herman called me by a pet name that I recall was