Samuel Delany is best known (at least in the circles I exist in) first, for his science fiction writing and second, for his science fiction criticism. But Delany's writing ranges well beyond these realms in its scope, extending from essays on comparative literature and queer studies, to memoir, to porn.
In Times Square Red, Times Square Blue, Delany uses both the approach of personal narrative and that of academic analysis to examine the link between urban development and architecture and vertical social contacts among urban dwellers. The two very different essays in the book were prompted by yet another plan to "clean up" Times Square in New York City, and taken together present a strong argument for the inclusion of places where people of different classes, races, and cultural niches can connect - in this instance, to form a loose community based on engagement in transgressive behaviours.
The first essay, Times Square Blue, is a personal record of Delany's experiences and observations as a participant in the street life in and around "old" Times Square - a neighbourhood of porn theatres and other establishments where gay men (and men who, while not identifying as gay, nonetheless chose to have sex with other men) could find willing casual partners, among other things that the renovators want to root out in the interests of protection of family values. Three Two One Contact: Times Square Red is a more theoretical essay, focusing on the changes in Times Square since the beginning of the urge to refurbish the area, and the resulting loss of an important public space where informal contacts can take place, subverting the modern tendency toward uniform neighbourhoods and sterile work spaces.
And interesting book, and a passionate argument for the importance of an urban environment that is organic, messy, open to a diversity of peoples and their needs, and able to facilitate unstructured contact between people.
For another perspective, read Jo Walton's review on tor.com. (http://www.tor.com/blogs/2010/07/sex-and-urban-planning-samuel-r-delanys-times-square-red-times-square-blue)