A recent interview with Chuck Close at his New York studio can be seen at:
Production of the Emma print took over eighteen months to complete. Also in the Gates commons is an etching of Close's daughter, Georgia, made completely from impressions of Close's fingerprint, and an incredibly detailed linoleum-cut self-portrait (both shown below). Close's prints and printmaking techniques are described in the book Chuck Close: Process and Collaboration.
Chuck Close Self Portrait II & Georgia Fingerprint
The depth and detail of Close's work can be seen in Lucas. Shown below. The image on the right depicts the detailing and style in which the portrait was crated.