Hansard's parliamentary debates. THIRD SERIES COMMENCING WITH THE ACCESSION OF WILLIAM IV. 27° & 28° VICTORIA, 1864. VOL. CLXXVI. COMPRISING THE PERIOD FROM THE TWENTY-FIRST DAY OF JUNE 1864, TO THE TWENTY-NINTH DAY OF JULY 1864. Parliament, Thomas Curson Hansard "Street Music (Metropolis) Bill "; V4, p471 [1]
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Stigler, George J. (1991). "Charles Babbage (1791 + 200 = 1991)". Journal of Economic Literature. 29 (3): 1149–1152. JSTOR2727614.
Franksen, OLE Immanuel; Rushton, RAY (November 1985). "General Notes". Journal of the Royal Society of Arts. 133 (5352): 880–883. JSTOR41374062.
Hooper, George N.; Babbage, Charles; Clarke, Hyde; Webster, Thomas; Bentham, M. S.; Good, S. A. (1855). "Journal of the Society for Arts, Vol. 4, no. 159". The Journal of the Society of Arts. 4 (159): 29–44. JSTOR41334443.
Ashworth, William J. (1996). "Memory, Efficiency, and Symbolic Analysis: Charles Babbage, John Herschel, and the Industrial Mind". Isis. 87 (4): 629–653. doi:10.1086/357650. JSTOR235196. S2CID143404822.
Roegel, Denis (April–June 2009). "Prototype Fragments from Babbage's First Difference Engine". IEEE Annals of the History of Computing. 31 (2): 70–75. doi:10.1109/MAHC.2009.31. S2CID45564453.
Passages from the Life of a Philosopher (1864), The Athanasian Creed, p. 403: "In the course of my inquiries, I met with the work upon the Trinity, by Dr. Samuel Clarke. This I carefully examined, and although very far from being satisfied, I ceased from further inquiry. This change arose probably from my having acquired the much more valuable work of the same author, on the Being and Attributes of God. This I studied, and felt that its doctrine was much more intelligible and satisfactory than that of the former work. I may now state, as the result of a long life spent in studying the works of the Creator, that I am satisfied they afford far more satisfactory and more convincing proofs of the existence of a supreme Being than any evidence transmitted through human testimony can possibly supply."