The Sons celebrated their second festival Nov. 2, 1853, at which Mr. Wilder occupied the chair as president, and delivered one of his most eloquent speeches. They assembled again June 20, 1861, to receive and welcome the New Hampshire regiment of volunteers and escort them to Music Hall, where Mr. Wilder addressed them in a patriotic speech on their departure for the field of battle. The two hundred and twenty-fifth anniversary of the settlement of Dorchester was celebrated on the 4th of July, 1855. The oration was by Edward Everett; Mr. Wilder presided and delivered an able address. On the central tablet of the great pavilion was this inscription: "Marshall P. Wilder, President of the Day. Blessed is he that turneth the waste places into a garden, and maketh the wilderness to blossom as a rose." In January, 1868, he was solicited to take the office of president of the New England Historic-Genealogical Society, vacated by the death of Gov. Andrew. He was unanimously elected, and is now serving the fourteenth year of his presidency. At every annual meeting he has delivered an appropriate address. In his first address he urged the importance of procuring a suitable building for the society. In 1870, he said: "The time has now arrived when absolute necessity, public sentiment, and personal obligations demand that this work be done and done quickly." Feeling himself pledged by this address, he, as chairman of the committee then appointed, devoted three months entirely to the object of soliciting funds, during which time more than forty thousand dollars was generously contributed by friends of the association; and thus the handsome edifice. No. 18 Somerset street, was procured. This building was dedicated to the use of the society, March 18, 1871. He has since obtained donations amounting to upwards of twelve thousand dollars, as a fund for paying the salary of the librarian. In 1859, he presided at the first public meeting called in Boston in regard to the collocation of institutions on the Back Bay lands, where the splendid edifices of the Boston Society of Natural History and the Massachusetts Institute of Technology now stand. Of the latter institution he has been a vice-president, and the chairman of its Society of Arts. He was one of the twelve representative men appointed to receive the Prince of Wales in 1860, at the banquet given him in Boston; also one of the commissioners in behalf of the Universal Exposition in Paris, 1867, when he was placed at the head of the committee on horticulture and the cultivation and products of the vine, the report of which was published by act of congress.