Our family recently returned from a visit to Manhattan. We used 5 or 6 texts as well as this boxed set of walking tours. The set consists of 50 3-3/4 by 5-1/2 inch heavy stock cards and a folding master card that shows all the walks in the context of a five bouroughs map.
There are 5 walks in Central Park, 8 Midtown, 3 north of the park and 19 south of the Flatiron Building. Two walks cover The Bronx, two are in Queens, 5 in Brooklyn. Each walk card shows a map on one side, of about a square mile, complete with Metro stops and a trail marked out; on the other side the text (which is smallish, but I'm glad for that because there's such a wealth of information one could fit on each card!) that points out historic buildings and architectural features and tells a few stories about the character of the area as well as its characters.
It was very convenient to grab a few cards as we went out the door. Also, after we got back and looked at pictures, it was easy to find that tour and get some information about it.
The only complaint is predictable. Each walking tour could handle a booklet, so a few hundred words is, of course, inadequate. There is no information about restaurants; again, that's understandable, but maybe more information could be included on the maps?
I would buy them again.