HELP! Can you help me name the title of a poem?

[Gwenboline 10]

I'm doing an exam in a couple of weeks and part of it is about a poem of which I do not remember the title :\ It is about a girl sat on a park bench by the Mississipi River. She reflects on her life while observing the comings and goings of passers by while observing their different characteristics etc...Any help much appreciated! Thanks!

[Hopman 46]

this might be a good start;

 

http://www.tulane.edu/~mrbc/2001/Literature/mudliterature.htm