Sites with High Quality Photos You Can Use for Free | CSS-Tricks
Free photos. This list includes a number of sites I haven't seen elsewhere. Many of these just share a few photos each week, and you'd have to be pretty creative to use them for most corporate e-learning. This isn't just typical stock photos.
Design Comics :: Characters and Scenes for Storyboarding & Design
Free characters and office scenes that can be used for e-learning. Different expressions and poses for conversations. The license information is conflicting; it's labeled CC-public domain, but requests attribution so it should really be CC-By.