VIVA's logo is shown below and available here.
The image below and linked from here includes a tooltip that provides some information about your library's cooperation with VIVA. To include the tooltip with the image, copy and paste the following HTML:
<img src="http://www.vivalib.org/images/icons/tiny.gif" alt="Sponsored by VIVA, the Virtual Library of Virginia (www.vivalib.org)" title="Sponsored by VIVA, the Virtual Library of Virginia (www.vivalib.org)">
This icon is also used to indicate "VIVA Access Only."