Nellie Marlow Series
Published by D. Lothrop & Co./ D. Lothrop Company
| 1. Overhead; or, What Harry and Nelly Discovered in the Heavens | 1878 First edition boards square |
| 2. Underfoot or What Harry and Nelly Learned of Earth's Treasures | 1881 |
| 3. Up Hill and Down Dale | 1886 |
| 4. Nelly Marlow in Washington | 1886 |
| 5. Lotus Bay-A Summer on Cape Cod | 1889 |
All five of these books are part of the "Illustrated Science Stories for Young Folks". Titles #1 and 2 are part of the "Natural Science for Young People Series".
These books were not a series until #2 was published as a sequel to #1.
Early non series (priority not known) of title #1:
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First series format in boards for "Underfoot"
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First board format for Up Hill and Down Dale 1886
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Common Board covers have been seen for these books from 1886.
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These titles also have this common cover.
The publisher of this cover was D. Lothrop and Co. as well as D.
Lothrop Company (1887 and later)
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