The world of electronics design has changed almost beyond imagination from the late 1950s and through the 1960s when the young engineers at MRC were busy designing new solid-state circuits to replace/enhance various modules and components of Dr. Lindquist's creation - the first high-speed electronic test-scoring machine - based primarily on vacuum tube design. The Folder on the Archival DVD, named as above, contains a JPEG-image file of several of the typical solid-state components (transistors, diodes, etc.).  The accompanying MS Word file 1960s_Solid-State components used by MRC_ORG.doc offers a few more tidbits about this era, and the hard-copy printout also has a small packet of transistor specimens attached