Seattle University students – Thank you for letting me share Human Centered Design (HCD) with you (my slides can be seen here). If you'd like to further explore HCD, the following resources are great places to start. Additionally, if you have further questions don't hesitate to reach out.

Online:

Designing Public Services – This guide was created by Nesta and IDEO and is a great introduction to the tools of design as they relate to 3rd sector programming. Print this out and study it, you won't regret it.
designkit.org - Design Kit is an online resource for all things HCD, produced by IDEO. On this site, you can find resources including training videos, case studies, and a seven-week online course to help you develop HCD mindsets and skillsets.
Stanford d.School - Stanford d.School was founded in the Engineering School at Stanford to equip the next generation of innovators with design-centric skills to solve some of the most challenging issues our society. They are a great resource for learning HCD and design-thinking methods.
Epic People - Epic is the leading online facilitator of knowledge sharing and resources when it comes to qualitative ethnographic research. Search "government" and all kinds of great stuff will come up.

Books:

Human Centered Design Toolkit, by IDEO
Innovating for People, by LUMA Institute
The Art & Science of Portraiture, by Sarah Lawrence-Lightfoot, et al
The Design of Business, by Roger Martin
Where Good Ideas Come From by Steven Johnson
A More Beautiful Question by Warren Berger
Creative Confidence, by Tom Kelley & David Kelley
Design for Dasein by Thomas Wendt

Case Studies & Miscellaneous

Public Policy Lab Design Blog
Design for Public Policy by Christian Bason
Article about the State Department Innovation Lab
How a public sector org in SF used design to create better services
Article outlining Human Centered Design + The Coast Guard + The White House
Human Centered Design saves federal government $600m

Further resources on design can be found in my design thinking resource guide.