NASA Photo ID: S81-29616
Date Taken: 04/06/81
STS-1 Pre-Flight Briefing - Astronauts John W. Young, left, and Robert L. Crippen study a visual aid in a small briefing room at the Johnson Space Center (JSC). They are taking part in a three-way teleconference, which involved engineers at JSC and at Rockwell International offices in California.
Source: NASA photo in my possession