Microphotograph slides Private collection of Professor Brian Stevenson, Ph.D. The majority of his slides bear one, pale brown label and the initials "JS". As Warren (2006) pointed out, the use of two initials on the "JS" labels achieves artistic balance. Others carry two yellowish labels and the initials "JCS". Another producer of microphotographs, the as-yet unidentified "EM" used similar labels, and may have been a colleague of Stovin's, they may have copied each other, or simply patronized the same printer.
