New York City Sky Scrapers - Photos of skyscrapers in New York and descriptions of the companies that occupy them. - http://www.nycskyscrapers.com/
Leon L. Dolice's New York City - Offers over 100 etchings and other work by the artist who specialized in landmarks and streets about the city. It also features an historical biography, exhibitions and links. - http://www.dolice.com/
New York Skyscrapers - One Hundred Years of High-rises - A study of the NYC skyscraper, its history and styles, as well as related regulatory, technological, social and economical issues. Interactive location maps and skyscraper photography. - http://www.greatgridlock.net/NYC/nyc.html