To see cartoons on specific topics...Health Care,  Environment, and the Drug War, click on the dates on the right side of opening page.   Will try to make this more clear.
  
                                        Introduction
Many,  or most, of these cartoons have been published in periodicals and  leaflets and web-sites, etc., around the USA, and  some in Germany, the  UK and Australia...and beyond.
Publications have included Z Magazine, Extra! (Fairness and Accuracy in   Reporting), Public Citizen, Earth First! Journal, POCLAD, Food and   Water, Solidarity, Synthesis-Regeneration, Compost Dispatch,   Philadelphia Daily News, University City Review (Phila.), Green Left   Weekly (Australia), Green Pages, Hawaii Island Journal, Funny Times,   Wild Earth, Dollars and Sense, Dissent, Earth Island Journal, North   Coast Xpress, Anderson Valley Advertiser, The Prism, The Partisan,   Orion, Tox CAT (UK- Communities Against Toxics), Boycott Quarterly,   Friends of the Earth, and others that I will add to this list when I   remember them.
Cartoons have been, or still are, also used at web  sites of various  activist groups such as NORML, and various Single  Payer health care  advocates.
A bunch of cartoons were scattered  throughout "Censored 2008" Project  Censored's 2008 annual collection of  top 25 Censored Stories, and in  Teishan Latner's "The Quotable  Rebel", an invaluable book of quotes  that are especially usable by  political activists.
Other work is periodically used in  commercial textbooks.
A lot of the cartoons have been graciously  hosted at Paul Goettlich's  amazing Mindfully site...which he no longer  administers, but is still  there. Worth a look for many reasons.     
http://www.mindfully.org  
My  cartoons (not all)  are at 
http://www.mindfully.org/Jonik/index.html
Contact:     
 j_jonik (at) yahoo.com
Cartoons  are free to use for non-commercial purposes, but if a user has   established policies for payment for graphics, I would, of course,   accept that.    If it is convenient, I'd appreciate a copy of the  issue  in which a cartoon appears.  And I ask that any reprint requests  be  forwarded to me.
For commercial uses, whatever the  established rates are will  suffice...and, again, I ask for a copy of the issue in  which a cartoon  appears....and that reprint requests be sent my way.
If higher resolution copies are needed, I will be glad to  accommodate.
If categories like Drug War, Environment, Health Care, General Cartoons  are not up on the opening pages, they can be found at clicks of  different dates on the upper right side of the opening page.   Don't  know why this is made so difficult, and why they aren't just easy to scroll down to.    Sorry for any inconvenience.
GENERAL CARTOONS:  
HEALTH CARE
(Left Click on Images to Enlarge)