Embryo Images Normal and Abnormal Mammalian Development -- Embryo Images Normal and Abnormal Mammalian Development is a tutorial that uses scanning electron micrographs (SEMs) as the primary resource to teach mammalian embryology. Formats include 3-D like quality of the micrographs and line drawings. The majority of micrographs are of mouse embryos and the remainder are human.
The site claims: "The line drawings have been used with permission from Lippincott Williams & Wilkins and are from the 6th and 7th editions of Langman's Medical Embryology by T.W. Sadler. These drawings may not be reproduced without the permission of the publisher."
The Multi-dimensional Human Embryo -- is a collaboration funded by the National Institute of Child Health and Human Development (NICHD) to produce and make available over the internet a three-dimensional image reference of the human embryo based on magnetic resonance imaging. The collection of images is intended to serve students, researchers, clinicians, and the general public interested in studying and teaching human development.
Prenatal Image Gallery -- Images covering from fertilization to birth, from the Endowment for Human Development (EHD).
UNSW Embryology -- An educational resource for learning concepts in embryological development.
Smith, B.R.(2013). Carnegie Stage 23 Human Embryo. From The Multi-Dimensional Human Embryo