here, once again, is the 1990 target dodgers 100th anniversary set card of hall of famer kiki cuyler.uni-watch sorted this out in 2010, noting that it was likely that the dodgers wore their 1937 uniforms during 1938 spring training.
speaking of spring training, dodger john winsett graced the cover of life magazine in april of 1938
here's another card showing the black armband - it's leo durocher's 2014 panini classics card
mckeever, along with his brother edward, had bought half of the club in 1912 as a way for charles ebbets to finance the construction of ebbets field. when ebbets passed away in 1925, edward mckeever became team president, but his tenure lasted only a few days before he too died. at that time, the team's manager wilbert robinson took over the role until 1930, and was succeeded by frank york (the mckeever's lawyer). in 1932, stephen mckeever was elevated to the role of team president and held the position until his death at the age of 84. as the team's president, mckeever also filled the role of general manager, and so would have been responsible for the signing of cuyler in february of 1938. mckeever's final transaction may have been the acquisition of dolph camilli from the phillies which occurred on march 6, the day before mckeever's death.