“One had to be more discerning in recognizing other Yankees players. And a program would have been of little help. In 1923, the Yankee uniforms were blank on the back. The team did not introduce uniform numbers until 1929; Ruth was given No. 3 because he batted third in the lineup and Gehrig was given No. 4 because he batted fourth. In 1923, the Yankees did not even have their famous interlocking N and Y on the left breast of their uniforms. The only similarity of those Yankees home uniforms with those of later years were the pinstripes.”