[3] Case entered Yale University in 1838, graduating in 1842 with honors in mathematics and languages[4] and notably helped found the secret society of the Scroll and Key.

The Editor of the Atlantic Monthly, wrote back saying: "Dear Sir:- Your note, returning the check for 'Treasure Trove,' reached me; and I can only now mingle surprise for so unexpected courtesy with acknowledgements for it.

Leonard concealed his involvement in a work published in 1876 known as Vocabulary of English Rhymes: Arranged on a New Plan, paying and supporting fellow Yale alumnus, Samuel Weed Barnum, to devote two and half years to its creation.

[11] In a preface in the second addition dated January 10, 1896, the author’s son, Thomas R. Barnum wrote: "it is proper to make a brief statement...in regard to the origin of the book.

The result of Mr. Case's labor was embodied in a beautiful manuscript volume containing perhaps half of the words in this present Vocabulary...insisting that his own connection with the matter should be carefully concealed.

This wish was scrupulously respected while Mr. Case lived, but now it is right to take this opportunity not only to acknowledge his share in the conception and execution of this work, but also to make grateful mention of one of those generous acts with which he quietly filled his life.