Published in Annals of the Carnegie Museum, in 1950, in volume 31, pages 89-238
Published in Annals of The Carnegie Museum, in 1950, in volume 31, pages 297-298
Published in Annals of The Carnegie Museum, in 1950, in volume 31, pages 299-320
Published in Annals of the Carnegie Museum, in 1950, in volume 31, pages 321-330
Published in Annals of The Carnegie Museum, in 1950, in volume 31, pages 333-334
Published in Annals of The Carnegie Museum, in 1950, in volume 31, pages 335-358
Published in Annals of the Carnegie Museum, in 1950, in volume 31, issue 12, pages 289-297