00-0257-10
Keck Observatory under construction
00-0257-12
Keck Observatory under construction
00-0257-16
Keck Observatory under construction
00-0257-17
Keck Observatory under construction
00-0257-19
Keck Observatory under construction
00-0257-21
Keck Observatory under construction
00-0257-26
Keck Observatory under construction
00-0293-01
Keck Observatory under construction
00-0293-04
Keck Observatory under construction
00-0293-07
Keck Observatory under construction