This is a correction made by Willie Hungerland to a letter sent to Willie Hungerford by Stanley W. Hungerford.
Mr. Hungerland merely crossed out "Hungerford" in the salutation of Stanley's letter and replaced it with "Hungerland," added the name "Hungerland" in the body of the letter where Stanley requested his name, and returned it in an envelope postmarked 12 May 1975.
There is no value here except to note that there apparently is no Willlie Hungerford.