Published in Journal of the Arnold Arboretum, in 1930, in volume 11, pages 15-46
Published in Journal of the Arnold Arboretum, in 1930, in volume 11, pages 47-48
Published in Journal of the Arnold Arboretum, in 1930, in volume 11, pages 119-129
Published in Journal of the Arnold Arboretum, in 1930, in volume 11, pages 192-193
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 1, pages 1-7
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 1, pages 7-14
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 1, pages 14-15
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 1, pages 48-50
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 1, pages 55-58
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 2, pages 63-119
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 2, pages 129-131
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 2, pages 131-133
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 3, pages 135-136
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 3, pages 136-147
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 3, pages 147-153
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 3, pages 153-168
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 3, pages 169-171
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 3, pages 172-180
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 4, pages 181-192
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 4, pages 193-220
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 4, pages 220-223
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 4, pages 224-228
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 4, pages 228-231
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 4, pages 231
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 4, pages 232-233
Published in Journal of The Arnold Arboretum, in 1930, in volume 11, issue 4, pages 233-244