Published in Journal of The Arnold Arboretum, in 1958, in volume 39, issue 2, pages 101-106

Published in Journal of The Arnold Arboretum, in 1958, in volume 39, issue 2, pages 107-110

Published in Journal of The Arnold Arboretum, in 1958, in volume 39, issue 4, pages 379-419

Published in Journal of The Arnold Arboretum, in 1958, in volume 39, issue 4, pages 420-423

Published in Journal of The Arnold Arboretum, in 1958, in volume 39, issue 4, pages 424-477

Published in Journal of The Arnold Arboretum, in 1958, in volume 39, issue 4, pages 478-493

Published in Journal of The Arnold Arboretum, in 1958, in volume 39, issue 4, pages 494-511

Published in Journal of The Arnold Arboretum, in 1958, in volume 39, issue 4, pages 512-513

Published in Journal of The Arnold Arboretum, in 1958, in volume 39, issue 4, pages 514

Published in Journal of The Arnold Arboretum, in 1958, in volume 39, issue 4, pages 515-521

Published in Journal of The Arnold Arboretum, in 1958, in volume 39, issue 3, pages 213-215

Published in Journal of The Arnold Arboretum, in 1958, in volume 39, issue 3, pages 347-378

Published in Journal of the Arnold Arboretum, in 1958, in volume 39, pages 49-100

Published in Journal of the Arnold Arboretum, in 1958, in volume 39, pages 111-212

Published in Journal of the Arnold Arboretum, in 1958, in volume 39, pages 217-295

Published in Journal of the Arnold Arboretum, in 1958, in volume 39, pages 1-48

Published in Journal of the Arnold Arboretum, in 1958, in volume 39, pages 296-346