You can find the 'Open Source' marks here, and the 'OSI Certified' marks here.
Here's a really cool button for your webpage:
We insist and ask that you link to the images of your choice instead of saving it on your own server.
Please follow this example:
border="0" width="110" height="95"></a>
Please pay special attention to the height & width variables. They are included in the image name.
Print Color Guide
A Color Guide for printing the "Open Source" and "OSI Certified" marks can be found here.