Letter from Kathleen [Yardley] Lonsdale, University College London, Gower Street, W. C. 1., to Professor [Edward Neville da Costa] Andrade Informs that lanthanum has two room temperature forms, providing further details and measurements, also quoting published works. In the postscript she mentions she 'should write and ask Smith to let one of his assistants go through Miller's reprints and find any with your name as an author'. 12 August 1947