For the tones you are seeking, I suggest sepia toner. Kodak makes a pre-packaged kit for 1 quart, and the formula is readily available.(posted 8741 days ago)This is a "bleach and redevelop" process. For dark tones that are fully brown, you bleach until the image disappears entirely. For brown-black shadows and brown only highlights, you don't bleach fully.
I like the fully bleached images better than partially bleached.
Your prints need to be darker than normal, as you loose density in this process, unlike selenium where you gain density.
The bleach in this process seems to wear out quickly, but it's just a potassium ferricyanide solution, so if you like the toner it's more economical to fix from formula. The Kodak mix, however, is a cheap and easy way to try it to see if it's for you.