Arrowsmith by Sinclair Lewis

With none of the profane observations on "medical peddlers" which had annoyed Digamma Pi, Martin studied the catalogue of the New Idea Instrument and Furniture Company, of Jersey City. It was a handsome thing. On the glossy green cover, in red and black, were the portraits of the president, a round quippish man who loved all young physicians; the general manager, a cadaverous scholarly man who surely gave all his laborious nights and days to the advancement of science; and the vice-president, Martin's former preceptor, Dr. Roscoe Geake, who had a lively, eye-glassed, forward-looking modernity all his own. The cover also contained in surprisingly small space, a quantity of poetic prose, and the inspiring promise:

Doctor, don't be buffaloed by the unenterprising. No reason why YOU should lack the equipment which impresses patients, makes practice easy, and brings honor and riches. All the high-class supplies which distinguish the Leaders of the Profession from the Dubs are within YOUR reach right NOW by the famous New Idea Financial System: "Just a little down and the rest FREE-out of the increased earnings which New Idea apparatus will bring you!"