This letter takes a publication to task for failing to run insightful stories by congratulating them for another publication's work.
1234, Main Street
Boston, MA 02123
09 April, 2005
<Recipient Address Goes Here>
I just wanted to tell you how much I enjoyed your feature on <story topic> a few issues ago. I thought it was very sharp reporting and some excellent interviewing on a very topical subject. Wait, that wasn't you guys. That was another <magazine/newspaper>. Never mind.
encl: <List of enclosed items goes here>