Obsolescent dealers

• Block parties?
• Assassins, in slang
• Purveyors of yesteryear
• Block deliverers of yesteryear
• Delivery people whose jobs were obviated by refrigeration
• Kristoff of "Frozen," and colleagues
• Workers skilled with tongs
• Service people of yesteryear
• Hired killers, in slang

Wiktionary Word definitions in Wiktionary
n. (plural of iceman English)