Experts in an industry often write regular columns about that industry for trade publications. Such articles can be great publicity...assuming that you know how to write them. This letter pitches an editor about such a regular column.
1234, Main Street
Boston, MA 02123
08 April, 2005
<Recipient Address Goes Here>
To come right to the point, I would like to propose writing a regular column on <column subject> for <publication name>. I have <describe writing experience>, and I think I could add valuable information to readers in <name your industry>.
<Describe column proposal.>
If you wish, I can write a sample column and send it to you for your examination. I can also send you other samples of my writing, so you'll know that I can handle a keyboard. At any rate, if you're interested in carrying my column in <publication name>, please call me at <phone number>, and let's talk it over.
I look forward to hearing from you.
encl: <List of enclosed items goes here>