Stricken with the plague at the age of 49, Gesner was unable to complete his Historia plantarum (See No. 1807.) His collection of botanical watercolors changed hands several times until they were acquired by the physician-scholar, Cristoph Jakob Trew who arranged to have them published as woodcuts and engravings in 1754-59. A second edition appeared in 1771. The watercolors then disappeared from view until they were “rediscovered” at the University of Erlangen in 1929. More recently 187 of the 700 watercolors were published in color facsimile with extensive commentary, and transcription of the manuscript notes as: Conradi Gesneri historia plantarum. Faksimileausgabe, hg. von H. Zoller, M. Steimann & K. Schmid. 8 vols., Dietikon-Zürich, Urs Graf, 1972-80. The same publishers also issued the complete series of 700 watercolors in facsimile as Historia plantarum: Gesamtausgabe herausgegeben von Heinrich Zoller und Martin Steinmann. 2 vols., 1987-1991. Digital facsimile from Google Books at this link.