Interesting grouping of collector-grade stadium postcards in various grades and degrees of use. Collection includes: 1) National League Baseball Park (NY Giants) VG condition postally unused. 2) Cincinnati Base Ball Park Grand Stand (Reds) postally used in September of 1907 F condition. 3) Navin Field Detroit Mich postally used (date unknown due to paper loss) P condition. 4) Yankee Stadium New York - Underwood & Underwood postcard depicting an in-action image a reproduction of a U&U photo. VG condition postally unused. 5) Baseball Game in West Side Ball Grounds Chicago (Cubs) depicting the team warming up before a game (2 examples). First in POOR condition postally used in September of 1908. Second in G condition postally used in December of 1913. 6) American League "Sox" Ball Park Chicago with image of Charles Comiskey in the lower-right corner. (2 examples) - VG condition with second in G condition postally used in November of 1914. 7) Interior Forbes Field Pittsburgh PA (2 examples). Both present well one postally used (date unknown) one written on but apparently not mailed. G condition. 8) New Base Ball Stadium and Park Pittsburg PA - scarce card with postal use in August of 1909. F condition with several creases. 9) Forbes Field Champion Pirates' Base Ball Park - postally used in May of 1910 VG condition aside from the writing. 12 postcards total.