Rebuses have been around for a long time. Most of them exploit letters only; some contain both letters and numbers; but relatively few use letters, numbers, and other typewriter symbols. If the reader will keep in mind that two identical letters, such as EE, can be pronounced either "ease" or "e-e", the following poem should not be too difficult to decode.
Espy, Willard R.
Word Ways: Vol. 7
, Article 16.
Available at: http://digitalcommons.butler.edu/wordways/vol7/iss1/16