Read "The Mystery of Cabin Island" by Franklin W. Dixon online for free on Textopian. Full text with search, annotations, highlights, and AI-powered reading aids.
The note which puzzled the Hardy boys was as follows:
Messrs. Frank and Joseph Hardy, / Bayport. / Dear Sirs: "If it is convenient for you to call upon me at my residence tomorrow I should like to talk to you about a matter that has been in my mind since my return from Europe. If you will be good enough to call early tomorrow afternoon I will explain further. / Yours very truly, / Elroy Jefferson. "