Margaret Cole
Born Margaret Isabel Postgate. An English socialist politician and author who sometimes collaborated with her husband <a href=https://openlibrary.org/authors/OL18544A/>G. D. H. Cole</a>. <a href=http://openlibrary.org/authors/OL6170072A>Raymond Postgate</a> (<a href=http://en.wikipedia.org/wiki/Margaret_Cole>Wikipedia</a>) was her brother.
Works (29)

The Anatomy of murder

Death in the Quarry

End of an Ancient Mariner

The Man From the River

The Great Southern mystery
1972

Superintendent Wilson's holiday

The brothers Sackville

Counterpoint murder

The murder at the munition works

The Murder at Crome House

The Blatchington Tangle

Dead Man's Watch

The death of a millionaire
1950

Poison in the garden suburb

The missing aunt

Knife in the dark

Our Soviet ally

The Brooklyn murders
1978

Last will and testament

The story of Fabian socialism

The Berkshire mystery

Never Too Old for God

Makers of the labour movement
1948

The Webbs and their work

Beatrice Webb
1945

A guide to modern politics

Servant of the country

Books and the people

The Bolo book