Vintage 1970's Tana Lawn quilt - log cabin pattern?

I made this one Summer in the early 70's when I was a student.
During term time I worked in Liberties on Saturdays and bought myself 
lengths of Tana lawn. I was drawn to the more abstract designs
which can be seen in this quilt.

Hard to photograph due to delicacy of colour and sunny day but happy to take more photos. 
Best colour match in photos 2 & 3
 

The quilt is backed with a more abstract Tana Lawn print - see last two photos

Measures 179cm X 195cm