Influential Pulitzer Prize–winning American author (1878–1968) of such muckraking classics The Jungle, Boston, and Oil! TLS, one page, 8.5 x 11, personal letterhead, May 11, 1925. Sinclair writes to Mr. Greenway (likely the prominent collector Cornelius Greenway). In part: “As to ‘The Brass Check’: I had many purposes; some I accomplished, some not. I lost a great deal of money selling it below cost, and I had not intended to do that! I am quite sure, however, that I helped to spread distrust of our capitalist press. Your friends are not saying very much when they say that I would do something sensational or get arrested in order to get something into the newspaper, I make that statement myself in ‘The Brass Check’ and explain why. Of course, men who are satisfied with the capitalist system will not get into trouble with the capitalist press.” In very good condition, with intersecting mailing folds (vertical fold to “n” of first name), small loss at lower right corner, and light uneven toning. R&R COA.