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
Wegner - En Stolemagner
Denmark, c. 1989
Edinburgh International Festival
Edinburgh, 1962
The High Mass is Coming
USA, 1967
Olympic Swimmers
USA, 1976
USA Gymnastics
Olympic Track
