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Man testing out a dentist's nitrous oxide machine. (Supplied Title)
Content Category: photographs
Colorization: black and white
Physical Support: acetate film
Source: Minneapolis Star and Tribune Company
Forms part of Minneapolis and St. Paul Newspaper Negative Collection. Additional views may be available at the Library.
M.18.B.1 Packet 11 (Locator Number)
MNHS Library Catalog
Collection Finding Aid