Horatio Alger Jr. 
Julius, the Street Boy [EPUB ebook] 

“Where are you goin’, Julius? Where’s yer blackin’ box?” asked Patrick Riley.
“I’ve retired from business, ” said Julius.
“Did yer rich uncle die, and leave yer a fortune?”
“No, but he’s goin’ up the river to Sing Sing, for the benefit of his constitushun, and I’m goin’ West fer my health.”