With the opening of a new Library in 1941 in New Malden, Surrey, Thomas was given the task of producing a series of nine plaques for the Library. These were executed in cast stone. They represent the nine main divisions of the Dewey classification system: Philosophy, Religion, Sociology, Philology, Natural Science, Applied Science, Fine Arts, Literature and History. They are on the outside walls of the Library.

He was also asked to produce a Relief panel of Caxton and his Printing Press. It was a large panel, 30 inches square, carved out of Australian Satinwood.

This was all ready for the opening of the Library on the Kingston Road on 22nd March 1941.