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Dr. William Hemmerlin explains a chemistry lesson while standing in front of a chalkboard in a Jorgensen Hall classroom in this 5" x 7" black and white photograph. This picture was published in the Central Union Reaper (December 1, 1977).

This black and white 3" x 4.5" black and white portrait of shows William Hemmerlin as he appeared about the time he started teaching chemistry at Union College in 1973. Hemmerlin left Union College to teach at Pacific Union College in 1979.

This black and white 3" x 4.5" black and white portrait of shows William Hemmerlin as he appeared near the time he left Union College to teach at Pacific Union College in 1979. Hemmerlin started teaching chemistry at Union College in 1973.