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Nellie McClung, with an airplane at the Lacombe airfield in 1920.

This group portrait of a graduating class in Prince Albert, Saskatchewan, brings together 49 individual portraits, mostly sharing the same oval shape and similar poses, facing forward or turned slightly to the side. The similarities between them, and…

In addition to its standard nutritional information, this book provides detailed instructions on how students might carry out experiments on rats in the classroom, feeding them deficient diets and observing the results. Students might also chloroform…