This is a Tune-Dex reference card for the World War II-era patriotic march "Man to Man (Infantry Song)," copyrighted in 1943 by Words and Music, Inc. of 1697 Broadway, New York. The card is a definitive artifact of the Tune-Dex system, a standardized repertoire index used by professional musicians, bandleaders, and radio stations during the mid-20th century. As a precursor to the modern fake book, this card served as a compact, portable lead sheet designed for rapid reference in rehearsal and live performance settings. The front side details the commercial framework of the song, crediting writers Fred Waring—the famed bandleader of the Pennsylvanians—and Jack Dolph, with orchestration by Larry Wagner. It is licensed through ASCAP and bears a stamped issue date of April 15, 1943, aligning with its copyright year. The prominent legal warning stating "This copy is intended for PROFESSIONAL use ONLY" underscores its role within the commercial music industry and the strict copyright enforcement of the Tin Pan Alley era. The verso contains the complete functional musical notation, presenting a condensed lead sheet for practical use. The melody is notated on a single staff in the key of C, accompanied by a dense sequence of chord symbols (including Dm7, G7, Cdim, and A7) placed above the staff to guide harmonic accompaniment. The lyrics, which celebrate the endurance and pride of the infantry with phrases like "pick 'em up, lay 'em down" and "we made it on our own two feet," are printed beneath the staff in a syllabic breakdown, a common practice for clarity in performance. This layout provided a working musician with all essential elements—melody, harmony, and lyrics—on a single 3x5 card, facilitating quick study, transposition, and ensemble coordination. The card’s structure, with its clear chord changes and streamlined presentation, reflects the needs of performers who required reliable, at-a-glance information for improvisation and arrangement. As a product of Tune-Dex Inc., printed at 1619 Broadway in the heart of New York's music publishing district, this card is a tangible document of wartime music distribution, professional performance practice, and the systematization of American popular repertoire during the 1940s.