Walking Manhattan's Rim- The Great Saunter, is by Cy A Adler, an affable old geezer who has often made the 32-mile trip around the perimeter of Manhattan Island, New York, NY. I love this book because it is an action and visualization book. It makes me fantasize about getting out of the house and going downtown (all of Manhattan is downtown for me, since I live in the Bronx) to sites- like by the Moorish-roofed style buildings of Yeshiva University.
The area from W. 186th St. on down, along the Harlem River, is the East side of Manhattan. I have often seen the old arches of the Washington Bridge between the Bronx and Manhattan (not the larger George Washington Bridge), but never knew it was possible to walk under these arches. Seeing parks and planted petunias would be a joy, though alas, in winter the flowers aren't in bloom. And so it goes down the line.
This book should be required reading for environmentalist, and fans of the newly inaugurated NY City Greenway project. Buy it on Amazon.com or at http://greeneagle.org/walking-manhattans-rim.