I'm not at all surprised that no one cited from Oscar Horace's second (1913) publication, "Word and Phrase Sources and Usage: Adjectival and Advebial Etymologies and Preposition Connectors," which he dedicated to his father, Horatio, and his daughter, Amelia.

Horace explains the French usages, as for instance ), "Je suis amoureaux d'Amelia.," of which the English translation is, "I am enamored of Amelia."

He was greatly surprised that, born of the English casual pronunciation of that phrase, an artisan created a tiny glazed bird he called the "Enamor Dove," to be used when words fail the suitor who wants her to be apprised of the depth of his love for her. (In marketing the artisan, at fairs, emphasized that the Enamor Dove exemplifies a a level of courtship that is far beyond the turtle dove stage).

Anyway, the Enamored Dove was oft-bought throughout the British Isles.

And, explains Horace, the product increased the popular usage of "I am enamored of."

Ultimately, Horace's 13 volumes of his word-usage explanations were replaced by more recent books authored by others beginning in the 1880s. Nothing replaced the Enamored Dove, and it was soon forgotten. Foolishly, Horace was against copyrighting and his volumes were not reprised. Libraries, always in need of shelf space, discarded the Horace 13 volumes or stacked them in their basement. Apparently, none of them now exists, either.

Luckily, a friend from Cambridge U, Divad Saratla, visited Washington, DC and was introduced at a party to a huge defensive lineman and they became fast friends. When David learned about his new friend's verbal deficiencies caused by dyslexia, he showed one of the Horace volumes to him, of which the football player became enamored. David gave to him all 13 of the Horace volumes.

I have no idea if any volumes are extant. After years of contacting the usual suspects (forgive me, Sam), and as I now unable to continue, I suppose that Horace's works, to the extent some still may exist, are lodging in a few private homes.

Cheers,
JuTep