"Can I share this post with the rest of the HOBT board of directors?"

Absolutely. And just in case they think I'm just one tired old crank, you might also direct them to this link, an article in the "Charity Navigator" website: How To Stop Solicitations By Mail. Apparently I'm not the only one with these concerns.

A day doesn't go by without a donor contacting us wanting to know how to stop charities from sending so many solicitations in the mail. While there is no foolproof way of removing your name from all mailing lists, following these 6 steps should allow you to see a decrease in the number of mailings you receive.

Only donate to charities with a demonstrated commitment to donor privacy.
To help you determine which charities are committed to protecting your privacy, Charity Navigator's financial evaluations include an assessment of each charity's donor privacy policy. To meet our criteria, a charity must have a written donor privacy policy that states it will not to sell or trade the personal information of its donors. In addition, we require that the policy be prominently displayed on the charity's website or in its marketing and solicitation materials.