Here's a crump I found on a Sam Lloyd article:

"The first composing period was his [Sam Lloyd's] youth, which coincides with his work for CHESS MONTHLY. The second period is his work with AMERICAN CHESS NUTS. The third one started in 1876, and again the literary aspects spurred him on. O.A. Brownson (1828-04-18 - 1892-04-28) had started the DUBUQUE CHESS JOURNAL in 1870, and later this magazine changed hands and changed its name to the AMERICAN CHESS JOURNAL.

The new owners couldn't improve the poor financial situation, however, <so it was bought by <Dr. C.C. Moore (1830-02-13 - ?)>, who knew Loyd and who also lived in Elisabeth, New Jersey. <Moore> asked Loyd to be the problem editor. After some years the magazine again changed owner and later it stopped.

It was <Moore> who gave Loyd the idea that he should publish his own problems. Moore took care of most of the financial aspects and spurred on Loyd until the work was completed.>

The book appeared as CHESS STRATEGY - a treatise upon the art of problem composition, by Samuel Loyd; it contains 535 problems on 279 pages. The work on it was started in 1878 and wasn't completed until 1881."

<A PARTING WORD

With the present number I close my connection with THE AMERICAN CHESS JOURNAL, having sold the stock of books, type, subscription list, good will, etc., to Dr. C.C. Moore, No. 68 Courtlandt street, New York, who will continue its publication, and fill all unexpired subscriptions. [...]

Wm. S. Hallock>

http://books.google.com/books?id=FI...

Here is a nice portrait of him, from a 1877 Scientific American supplement. It's certainly out of copyright, so perhaps <CG> might add it here?

http://www.chesscafe.com/text/revie...

<WHITE PLAINS, N.Y., April 10. -- Dr. Clifford Colgate Moore, a retired New York physician, and his wife and Frederick Payne are at their respective homes suffering from injuries sustained through runaways resulting from reckless driving of automobiles.>

http://query.nytimes.com/gst/abstra...

<Woore's Lozenges. "I can say in alLcandor thatMoore'a Lozenges aro thu bost thing of the kind evor used in my family. Thoy .are a wonderful medicine in hoarse- ness, coughs, fitc. Preacluirs and singers will IInd them invaluable. Among childrou thoy tiro iho most excellent and agreoabki remedy to be found." KKV.'W. McK., Uarwood. Thoy aro the host remody in the world for Whoojung Coujjh or a hard cold. Moore's hoxougeH are truly tho best modtctue for Throat and Lungs ever produced. Sold in 10 cent and large 5ft cdnt boxos. By druggists, or Dr. C. C. Moore, 78 Cortlandt St., New York City.>

<As we see, Loyd's chess problem activities occurred mostly in brief spurts with shorter or longer pauses in between.

The first composing period was his youth, which coincides with his work for CHESS MONTHLY. The second period is his work with AMERICAN CHESS NUTS. The third one started in 1876, and again the literary aspects spurred him on. O.A. Brownson (1828-04-18 - 1892-04-28) had started the DUBUQUE CHESS JOURNAL in 1870, and later this magazine changed hands and changed its name to the AMERICAN CHESS JOURNAL. The new owners couldn't improve the poor financial situation, however, so it was bought by Dr. C.C. Moore (1830-02-13 - ?), who knew Loyd and who also lived in Elisabeth, New Jersey. Moore asked Loyd to be the problem editor. After some years the magazine again changed owner and later it stopped. It was Moore who gave Loyd the idea that he should publish his own problems. Moore took care of most of the financial aspects and spurred on Loyd until the work was completed. The book appeared as CHESS STRATEGY - a treatise upon the art of problem composition, by Samuel Loyd; it contains 535 problems on 279 pages. The work on it was started in 1878 and wasn't completed until 1881.>

http://problemskak.dk/td100-sl.htm

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Notice of Mrs. C.C. Moore recovery (but not the Dr) on May 7, 1902: