"Adrian Mack"
"midrange horn"
"tractrix"
"conical"

I know that each of those will give you a lot of links, but you will be able to identify some of them by their subject titles. Just click through a few and I'm sure you'll find the things you're looking for.

Sorry the search feature isn't more advanced, and looks only for exact matches. But that's the most used type of search, so I suppose that's a good one to have. Chris R. is looking over the code and may donate some time; I also will probably put some time into the deal, but I have about a zillion things to do first.