As is often the case, even the most arcane sorts of information wind
up having a home -- somewhere -- on the interet. In the case of
nonprofit organizations, the place to turn to for Board of Director
listings, and all sorts of other information, is the Guidestar webpage
Towards the top of the page, you will see some clickable text that
"Search for more than 850,000 IRS-recognized nonprofits"
That's the button you want. Just enter the name of the organization,
and Guidestar will take you to a summary page of information, with
links to more complete information -- including Board listings.
For instance, entering "Red Cross" in the "name of organizations"
search box pulls up:
American National Red Cross
430 17th St NW
Washington, DC 20006
On the left of the page is a set of links for more information,
including one called "Leaders". Clicking on this takes me directly to
a list of about 50 very distinguished-looking names of the Red Cross
Board of Directors.
I'll also mention a link for many nonprofits to something called Form
990. This is a form filed with the IRS that has a full set of the
organization's financial information, as well as a lot of information
about organizational leadership -- including a list of the Board of
Directors. If for some reason the Board listing is not on the
Guidestar site, then the Form 990 is a good backup option.
I hope this answers your question fully, but if you need more
information, just let me know through a "Request for Clarification".