30 x 42 in (75 x 107 cm)
ID #101462
1950 1955 250-500 Chart 26. Light charts educational foot-candle meter industrial industry information informative institutional instructional invention inverse lenses light medium mirrors Original 1955 periscope product reflection refraction schools science scientific size-29-5x42 slick coating on surface; dimensions may vary slightly with each by about a 1/4 inch telescope US United States vintage poster W. M. Welch Manufacturing Company
Pop Oper
USA, 1967
Winne /Winner
USA, c. 1970s
Sheep on Drugs
USA, 1996
Bloodless Pharoahs
USA, 1980
Jefferson Airplane
USA, 1968
Jimi Hendrix
France,1974
