Palomar Mountain Observatory Block of Stamps

FIRST DAY OF ISSUE Art Craft DEDICATION OF THE 200 INCH TELESCOPE-JUNE 3, 1948 PALOMAR MOUNTAIN OBSERVATORY FOT MOUNTA AUG 30 9-AM 1948 CALIF PALOMAR MOUNTAIN 3¢ OBSERVATORY 1948 PALOMAR MOUNTAIN 34 OBSERVATORY 1948 Michael D. Lindsey 413 Columbia Terrace Peoria, Illinois PALOMAR MOUNTAIN 34 OBSERVATORY 1948 PALOMAR MOUNTAIN OBSERVATORY 1948 34 UNITED STATES POSTAGE