I have read tons of material on cover letters for book manuscripts . . . But what about magazine manuscripts? Do we need to spend as much time agonizing over these cover letters? I have a completed manuscript which is perfectly targeted to a specific publication. This publication states in their guidelines that they prefer a completed manuscript to a query. How much "sell" should I put into the cover letter? They will have the manuscript in their hands. I don't need to sell them on reading it. It seems to me the manuscript should sell itself. Should I mention other things I've published? My educational background? I could use some guidance here. Thanks.