Published in Notes From The Leyden Museum, in 1903, in volume 23, pages 185-189

Published in Notes from the Leyden Museum, in 1903, in volume 23, pages 213-222

Published in Notes From The Leyden Museum, in 1903, in volume 23, pages 231-233

Published in Notes from the Leyden Museum, in 1903, in volume 23, pages 234-236

Published in Notes from the Leyden Museum, in 1903, in volume 23, issue 4, pages 180-182

Published in Notes From The Leyden Museum, in 1903, in volume 23, issue 4, pages 183-184

Published in Notes From The Leyden Museum, in 1903, in volume 23, issue 4, pages 190-194

Published in Notes From The Leyden Museum, in 1903, in volume 23, issue 4, pages 223-228

Published in Notes From The Leyden Museum, in 1903, in volume 23, issue 4, pages 229-230