This is not the/a Bookman. And financially seen that is the good news, The bad news is that I can not find this thing. Apart from the swashes, it floats somewhere in between a Garamond (likely a URW one), a Cushing and even Century Old Style (specially the s), all manually slanted, and none matches.
This is a bad day.
Have fun and ... be nice to the cats
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Relax ... it is just a font