In watching videos of the HR, the shadows were already out to the mound at the time Maris hit his 61st. In the series of pictures on this card, his shadow is still clearly visible which would be impossible if he was in the shade. Likely this series of pictures on this card are not from that day or were from earlier in the game. Something similar was recently posted about the pictures that appear on the 62 Killebrew IA card.
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