Is it approriate to point out errors in the literature review in a thesis? In a couple of either books or articles that I have read as part of my research there have been some minor errors (when taken in context of the whole work) when they relate to the area I am researching. My general research area is History. 

For example one is, Area A operated as a B. Wherein fact it should have said Area A operated as a C.

The reasoning I was thinking of referring to them is to highlight while there is good literature on the topic I'm researching, sometimes errors can occur in more general histories which (hopefully) my thesis can address.  

Is it appropriate to refer to such errors in that context?
If such errors in published literature are relevant to the question of your thesis, then yes, it is not only appropriate, but even necessary that you address them.

Otherwise, if the question of your thesis is not affected by these errors, and they are not major problems, I don't think they are important enough to mention in the literature review.