Heinie Mueller, an outfielder for the St. Louis Cardinals, stands in left field at Sportsman Park in St. Louis, Missouri as he gazes forward towards the infield while holding the baseball across his body around chest level.
No;
Mueller appears to be in the process of throwing a baseball to the infield. Mueller has brought the baseball forward and in front of his body, and he could throw the baseball into the infield from this position.
Clarence Francis "Heinie" Mueller was born September 16, 1899, in Creve Coeur, Missouri. He was an American center and right fielder, playing for the St. Louis Cardinals, New York Giants, Boston Braves, and the St. Louis Browns. He played in 693 games and had a batting average of .282 over the course of his career.
Leslie Mann identifies a different slide as being slide 280 in his manual titled the Fundamentals of Baseball. Because of this, very little information is known about this slide.
Good condition;
This digital image is made from two separate digital scans; one scan of the lantern slide (reflective); one scan of the image (transparency); the two image were then combined in Photoshop to create the final image.
Lantern slide from the Leslie Mann baseball instruction course, "The Fundamentals of Baseball"
"Heinie Mueller." Baseball Reference, [ https://www.baseball-reference.com/players/m/muellhe01.shtml ]. Accessed 16 May 2018. ___Interne Archive___. [http://web.archive.org/web/20180516122714/https://www.baseball-reference.com/players/m/muellhe01.shtml ].