Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 1, pages 1-25

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 1, pages 26-53

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 2, pages 79-117

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 2, pages 118-129

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 2, pages 130-132

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 2, pages 133-140

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 2, pages 149-163

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 2, pages 164-172

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 2, pages 183-184

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 3, pages 185-195

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 3, pages 196-205

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 3, pages 206-257

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 3, pages 258-260

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 4, pages 273-321

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 4, pages 322-343

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 4, pages 344-348

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 4, pages 349-357

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 4, pages 357-359

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 4, pages 360

Published in Journal of The Arnold Arboretum, in 1937, in volume 18, issue 4, pages 363-376

Published in Journal of the Arnold Arboretum, in 1937, in volume 18, pages 54-57