T&P Mom , I got a quick look at my book "Adobe Photoshop for Photographers" and that's is what I got:

Go to:
File>Automate>Conditional mode change>Duotone at the Source mode and click in the button that says "All" then at the Target mode choose duotone> click OK>then choose Type :Tritone>Click in the squares and fill in the blanks:
Ink 1: black
Ink 2: Pantone 1655 CVC
Ink 3: Pantone 4557 CVC

Then you can go to Image>Ajustements>Curves if you wish a harder o softer sepia tone

I hope that is understable

After that I got a stupid bell ringing and I'm blocked, can't save the pic or do whatever not even close the program