Embryology

Genitourinary Development
This tutorial correlates embryology with congenital anomalies. It includes illustrations and some movies.
Development of the Human Heart
From Loyola University Chicago. This site describes the normal development of the human heart and some congenital abnormalities. The text is accompanied by illustrative figures.
Embryo Images
This site employs scanning electron micrographs to illustrate mammalian embyology. The micrographs are accompanied by text and line drawings.
International Society of Developmental Biologists
Developmental Biology
(NCBI Bookshelf, Gilbert)