Barry -
Yes a couple spots of paper may be removeable by an expert...after looking closely I would NOT be that expert.
From what I was told this came from a scrapbook from someone on the West Coast that was filled with all sorts of things from the Brooklyn-New York area. Could have been someone that maybe made a trip east and had a souviner from each place they visited?
And it would appear Brooklyn had a heck of a team that year.