Abolitionism in America

A collection of four 𝓡letters and pamphlets, comprising:

i) [Harriet Martineau.] The Martyr Age of the United States of America with an appeal on behalf of the Oberlin Institute in aid of the Abolition of Slavery. Re-published from the London and Westminster Review, by the Newcastle upon Tyne Emancipation and Aborigines Protection Society. Newcastle upon Tyne, 1840. 8vo, original printed wrappers, spotting, strengthened at spine

ii) John Harkwell Cocke, former President of the United States Temperance Society and a founding member of the University of Virginia, autograph letter signed, to the noted clergyman, Cortland Van Rensselaer, discussing John McDonogh and his plans for "the amelioration of the conditions of Africans here & preparing them for, & transporting them to the land of their forefathers", 3 pages, 4to, 16 April 1846, creasing, light staining

iii) Rev. Dr C. N. A. Lowell, son of Judge Lowell (a member of the commission that drafted the Constitution of Mass.), autograph letter signed, to the Duke of Sutherland, denouncing American slavery,&nb🐈sp;with a transcription of the poem 'The Slave Mother' by his daughter-in-law Ma✤ria White Lowell, 4 pages, 4to, postmarked Boston, Mass., 6 June 1855, with a related cutting 

iv) S. C. Newsom, autograph letter signed, to Miss Grace E. Brown of Salt Lake City, describing a theatrical performance of Uncle Tom's Cabin followed by a lecture given by "the veritable Geo[rge] 💦Harris from whom the greater part of the information was taken by Mrs Stowe", also mentioning a forthcoming lecture by the feminist Belva Ann Lockwood, 16 pages, 8vo, Valparaiso, Indiana, 3 Ma🔯rch 1889, with envelope and later cutting