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5.0 x 7.0 inch nitrate negat …

NI98-129

H.H. Nininger studying speci …

[Unknown, Grant Outerbridge]

5.0 x 7.0 inch nitrate negat …

NI98-130

H.H. Nininger studying speci …

[Unknown, Grant Outerbridge]

2.5 x 3.75 inch nitrate nega …

NI98-148

Meteoritic dust experiment

[Harvey H. Nininger, Grant O

2.5 x 3.75 inch nitrate nega …

NI98-149

Meteoritic dust experiment

[Harvey H. Nininger, Grant O

2.5 x 3.75 inch nitrate nega …

NI98-150

Meteoritic dust experiment

[Harvey H. Nininger, Grant O