The article discusses several topics that were covered in the periodical 50, 100 and 150 ago. These include research on a working model of a laser in communication in the January 1966 issue, a trip by automobile to the Pacific Coast over the Lincoln Highway published in the January 1916 issue and information on the Great Comet of 1861 that the Earth passed on June 19, 1861, published in the January 1866 issue of the periodical.
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