From a distance I thought this was Crow Poison (Nothoscordum bivalve) but as I got nearer I saw that it has completely different leaves, along with different coloring.

The blooms are small, just like crow poison. About dime sized.

Does anyone know what this is? I'm thinking maybe Claytonia virginica.

Looks like it to my eyes but I'm not real good at comparing photo's. Check out these images of C. virginica: http://www.wildflower.org/plan...

Sure looks like a match to me.

Me too ... but my eyes aren't what they used to be. Hopefully someone else will chime in.

That appears to be it.

That's what it looks like to me, and it is native to your area.

I assume then, that you know that broad leaves that are so apparent in the third pic do not belong to the flower. (C. virginica has the linear leaves.)

I agree it is C. virginica, but might I suggest that you caption that particular data base entry as such, so viewers are not confused.
C. sibirica has similar broad leaves.

Photo's for comparison: C. sibirica: http://www.wildflower.org/gall...