Letter #1: 1891 Sep 29. Harrington writes that his response to McClure's favor of Aug. 26 has been delayed by his absence from home. He regrets that his regular duties take so much energy that he cannot write the articles McClure suggests, but hopes that in the future he will be able to do so. Letter #2: 1892 Mar 22. Harrington writes that after some thought he has decided on a plan for the three articles. He suggests the general title "Circuit of the Waters," with three individually titled articles, including "How the Water Gets into the Air," "The Condensation of Water," and "The Return of the Water to the Surface of the Earth." In a handwritten note at the bottom of the letter, Harrington remarks that perhaps it would be better to include a fourth article titled "Where the Water is Deficient and Why." Letter #3: 1892 Mar 29. Harrington writes in response to McClure's letters of the 22nd and 28th to say that he is somewhat embarassed by the topic "What We Know About Air," as it is a broad one. He cannot think of a way to treat it satisfactorily, and so he mentions a few of the ideas he has. Letter #4: 1892 Apr 5. Harrington writes that he has received McClure's favor of the 4th and will write the article he desires in a day or two. The others will follow as Harrington is able to write them. Letter #5: 1892 Apr 9. Harrington writes that he encloses an article on the tornado question which he hopes will be acceptable. The article has five illustrations, four of which he made. He notes that he has an article written on tornadoes proper but that it will be several days before the three cuts have been drawn. He also notes that if McClure still wants an article on weather predictions, it will take him about a week to complete it. In general, he requires about a week's notice to prepare an article. Letter #6: 1892 Apr 30. Harrington sends McClure a brief article on tornadoes in accordance with his suggestions, and promises that his article on weather predictions will follow soon. Letter #7: 1892 May 5. Harrington responds to McClure's favor of May 3 and responds to his suggestions and questions accordingly. He intends to write the article on Weather Prediction just as soon as he has time.
