Ragged Dick by Horatio Alger, Jr.

Fortunately for Dick, his young tutor was well qualified to instruct him. Henry Fosdick, though only twelve years old, knew as much as many boys of fourteen. He had always been studious and ambitious to excel. His father, being a printer, employed in an office where books were printed, often brought home new books in sheets, which Henry was always glad to read. Mr. Fosdick had been, besides, a subscriber to the Mechanics' Apprentices' Library, which contains many thousands of well-selected and instructive books. Thus Henry had acquired an amount of general information, unusual in a boy of his age. Perhaps he had devoted too much time to study, for he was not naturally robust. All this, however, fitted him admirably for the office to which Dick had appointed him -- that of his private instructor.

The two boys drew up their chairs to the rickety table, and spread out the paper before them.