This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
William Aspdin Radford cyclopedia Volume . en Portrait of William Aspdin page xviii of Volume of Radford's cyclopedia of cement construction The accompanying text reads WILLIAM ASPDIN pioneer in the manufacture of Portland cement who first developed the industry to substantial commercial footing in England He was son of Joseph