Front:
TP
01 02
THE TUBE OF THE 82-INCH REFLECTOR OF THE W. J. MCDONALD OBSERVATORY
THE UNIVERSITY OF TEXAS. A STELLAR
OF
SPECTROGRAPH
AT THE LOWER END OF THE TELESCOPE JUST BELOW THE MIRROR CELLS.
IS
ATTACHED
3-FDTR
Back:
39.
ORIGINAL CAMERA STUDY
C. R. CHILDS CO.,
REPRODUCTION RIGHTS RESERVED
5707 LAKE ST., CHICAGO
REG.
TRADE
MARK
POST GARD
