Published in Journal of the Arnold Arboretum, in 1942, in volume 23, pages 55-78
Published in Journal of the Arnold Arboretum, in 1942, in volume 23, pages 112-155
Published in Journal of the Arnold Arboretum, in 1942, in volume 23, pages 231-232
Published in Journal of the Arnold Arboretum, in 1942, in volume 23, pages 298-343
Published in Journal of the Arnold Arboretum, in 1942, in volume 23, pages 444-463
Published in Journal of the Arnold Arboretum, in 1942, in volume 23, pages 464-478
Published in Journal of the Arnold Arboretum, in 1942, in volume 23, pages 479-494,
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 1, pages 1-28
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 1, pages 29-54
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 1, pages 79-92
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 1, pages 93-102
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 1, pages 103-109
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 1, pages 110-111
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 2, pages 133-155
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 2, pages 156-197
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 2, pages 216-225
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 3, pages 267-297
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 3, pages 344-355
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 3, pages 366-368
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 3, pages 369-376
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 3, pages 377-381
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 4, pages 383-416
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 4, pages 417-443
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 4, pages 495-508
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 4, pages 509-519
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 4, pages 519-521
Published in Journal of The Arnold Arboretum, in 1942, in volume 23, issue 4, pages 522