Digital Histology is an open-access instructional package developed at Virginia Commonwealth University. It is organized as chapters that parallel those of most histology textbooks.  Each of the over 1600 pages contains an original, high quality image accompanied by descriptive text and selectable labels.  In addition, interactive quizzes with formative feedback accompany each chapter of Digital Histology.  A review textbook with hyperlinks to images in the main package is also included.  A brief introductory video is available here: Introduction to Digital Histology