Subject: What direction does the current flow in a DC circuit?

I understand it to be that electricity is the flow of electrons. Therefore 
it seems that the current in a DC circuit should flow from the negative 
terminal to the positive terminal. When I go online to sites run by battery 
manufacturers (Duracell, Eveready, etc.) the diagrams I see indicate this is 
true. However, I keep running into diagrams in science textbooks and 
resource books that show the current running from positive to negative. Why? 

Re: What direction does the current flow in a DC circuit?