STS-88, December 1998
Astronauts James H. Newman (left) and Jerry L. Ross work between Zarya and Unity (foreground) during the first of three scheduled spacewalks on the STS-88 mission. Newman is tethered to the module, while Ross is anchored at the feet to a mobile foot restraint mounted on the end of the remote manipulator system (RMS) arm.
Reproduced from the NASA Website
AZ Technology produced black and white assembly targets on Unity Module.