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Plasma Space Sciences Symposium Banquet
In a 1967 article, Dr. Gabriel D. Boehler briefly introduced Dr. Chang’s career and recalled that Chang “was in June 1963 Director of a very successful Symposium on Plasma Space Sciences which attracted world attention.” The symposium marked the…
Picking slate in Scranton, PA, n.d.
Boys in Scranton, Pennsylvania pick slate from coal. Industrial change transformed the nature of work in the late nineteenth and early twentieth centuries, and young children often labored in the new industries instead of attending school or…
Pickets near fields
Striking farm workers hold a demonstration at a lettuce field, Salinas, California.
Picketer with "Huelga!" sign
Picketer with a "Viva la Huelga!" sign during the Coachella Valley Strike in California.
