Icons to use for Visual Thinking

Thanks to Nancy at Full Circle Online Interaction Blog for directing my attention to Michael Erikson's generous offering of

87 icons that I’ve released to the public domain to aid Graphic Facilitators, Lean System Process map makers and Visual Language practitioners. Use Freely with my blessings, I release ALL copyrights
Michael Erickson

Follow this link to download the icons. On my computer I am not able to see all of the images on that page but once I downloaded the powerpoint I had access to them all. He says there are more to come... What a gift, Thank you!!