Full color poster is 8 1/2" x 24" and reads: American Whistle Corp. The one. The only. Giving high school marching band leaders a false sense of superiority since 1956. Band Director Poster BD Poster$5.00 Band Director PosterFull color poster is 8 1/2" x 24" and reads: American Whistle Corp. The one. The only. Giving high school marching band leaders a false sense of superiority since 1956. Band Director Poster BD Poster$5.00 American Whistle Corporation 6540 Huntley Road, Columbus, Ohio 43229, 800.876.2918, 614.846.2918