[Boue, A., 1823. Outlines of a geological comparative view of the south-west and north France, and the south of Germany. Edinburgh Philosophical Journal 9, 128–148.]Search in Google Scholar
[Boue, A., 1836. Resultats de ma premiere journee dans le nord et la centre de la Turquie d’Europe. Bulletin de la Societe Geologique de France 8, 14–63.]Search in Google Scholar
[Boue, A., 1837. Some observations on the geography and geology of northern and central Turkey. Edinburgh New Philosophical Journal 22, 253–270.]Search in Google Scholar
[Boue, A., 1838. La lettre addresse de Vienne par M. Boue a M. Cordier. Bulletin de la Societe Geologique de France 9, 126–145.]Search in Google Scholar
[Boue, A., 1840. La Turquie d’Europe ou observations sur la geographie, la geologie, l’histoire naturelle, la statistique, les mouers, les coutumes, l’archeologie, l’agriculture, l’industrie, le commerce, les gouverments divers, le clerge, l’histoire et l’etat politique et cet empire. Arthus Bertrand, Paris, vol. 1, 555 pp.]Search in Google Scholar
[Bronn, H.G., 1830. Gaea Heidelbergensis, oder Mineralogische Beschreibung der Gegend von Heidelberg. Karl Gross Heidelberg (see loess section in Loess Letter 67 April 2012 www.loessletter.msu.edu)]Search in Google Scholar
[Ding, H., Li, Y., Yang, Y. & Ja, X., 2019. Origin and evolution of modern loess science 1824–1964. Journal of Asian Earth Sciences 170, 45–55.10.1016/j.jseaes.2018.10.024]Search in Google Scholar
[Gliboff, S., 2008. H.G. Bronn, Ernst Haeckel, and the origins of German Darwinism. MIT Press, Cambridge, 259 pp.10.7551/mitpress/9780262072939.001.0001]Search in Google Scholar
[Hibbert, S., 1832. History of the extinct volcanos of the basin of Neuwied on the Lower Rhine. W. & D. Laing, Edinburgh (see loess section in Loess Letter 67 April 2012 www.loessletter.msu.edu)]Search in Google Scholar
[Horner, L., 1836. On the geology of the environs of Bonn. Transactions of the Geological Society of London 4, 433–481.10.1144/transgslb.4.2.433]Search in Google Scholar
[Horner, L., 1847. Address delivered at the anniversary meeting of the Geological Society of London 19 February 1847. Quarterly Journal of the Geological Society of London 3, 22–90.10.1144/GSL.JGS.1847.003.01-02.03]Search in Google Scholar
[Jovanovic, M., Gaudenyi, T., O’Hara-Dhand, K. & Smalley, I.J., 2013. Karl Caesar von Leonhard (1779–1862) and the beginnings of loess research in the Rhine valley. Quaternary International 334–5, 4–9.10.1016/j.quaint.2013.02.003]Search in Google Scholar
[Leonhard, K.C. von, 1824. Charakteristik der Felsarten, vol.3. Trummer-Gesteine, Lose Gesteine, Kohlen. Joseph Engelmann, Heidelberg, pp. 599–772 (see loess section in Loess Letter 67 April 2012 www.loessletter.msu.edu)]Search in Google Scholar
[Lyell, C., 1833. Principles of Geology. vol. 3. Murray, London, 464 pp. (facsimile reprint University of Chicago Press, 1991).]Search in Google Scholar
[Lyell, C., 1834. Observations on the loamy deposit called ‘loess’ of the basin of the Rhine. Edinburgh New Philosophical Journal (part reproduced in Smalley, 1975)]Search in Google Scholar
[Lyell, K.M., 1890. Memoir of Leonard Horner. Womens Printing Society Ltd., London, vol. 1, 376 pp. (reprint Cambridge University Press, 2011)]Search in Google Scholar
[Markovic, S.B., Fitzsimmons, K.E., Sprafke, T., Gavrilovic, D., Smalley, I.J., Jovic, V., Svircev, Z., Gavrilov, M.B. & Beslin, M., 2016. The history of Danube loess research. Quaternary International 399, 76–89.10.1016/j.quaint.2015.09.071]Search in Google Scholar
[Noeggerath, J.J., 1822–26. Das Gebirge in Rheinland-West-falen, nach mineralogischen und chemischen Bezuge. Weber, Bonn, 4 vols.]Search in Google Scholar
[Rozet, C.A., 1830. Memoir geologique sur le terrain Diluvien de la Vallee du Rhin. Journal de Geologie 1, 25–50.]Search in Google Scholar
[Różycki, S.Z., 1991. Loess and loess-like deposits. Ossolineum, Wroclaw, 187 pp.]Search in Google Scholar
[Rudwick, M.J.S., 1991. Bibliography of Lyell’s sources. Attached to vol. 3 Principles of Geology, Chicago, pp. 113–160.]Search in Google Scholar
[Schwarz, C., 2014. Die Geschichte der Geologischen Erforschung des Siebengebirges. Creative Space Independent Publishing Platform, Marston Gate, 190 pp.]Search in Google Scholar
[Sedgwick, A. & Murchison, R.I., 1832. A sketch of the structure of the eastern Alps, with sections from the newer formations on the northern flanks of the chain, and through the Tertiary deposits of Styria with supplementary observations, sections, and a map by R.I. Murchison. Transactions of the Geological Society of London 3, 241–420.10.1144/transgslb.3.2.301]Search in Google Scholar
[Smalley, I.J., (Ed.), 1975. Loess Lithology and Genesis. Dowden, Hutchinson & Ross, Stroudsburg, 429 pp.]Search in Google Scholar
[Smalley, I.J., 1986. Lyell on loess. Loess Letter Supplement no.8, (Material from Principles of Geology, vol. 4, 1835).]Search in Google Scholar
[Smalley, I.J., 2017. Six days in July: Charles Lyell in the Eifel in 1831 (possibly looking at loess). Geologos 23, 131–136.10.1515/logos-2017-0014]Search in Google Scholar
[Smalley, I.J., 2019. Samuel Hibbert in Edinburgh; early studies on loess deposits – connecting Leonhard and Lyell. Quaternary International 502A, 165–172.10.1016/j.quaint.2017.12.022]Search in Google Scholar
[Smalley, I.J. & Kels, H., 2018. Leonard Horner and an enthusiasm for loess. Aeolian Research 31B, 85–90.10.1016/j.aeolia.2017.03.004]Search in Google Scholar
[Smalley, I.J. & Markovic, S.B., 2017. Four loess pioneers: Charles Lyell, F.von Richthofen, V.A.Obruchev, L.S.Berg. Quaternary International 469A, 4–10.10.1016/j.quaint.2016.07.031]Search in Google Scholar
[Smalley, I.J. & Markovic, S.B., 2019. An enthusiasm for loess: Leonard Horner in Bonn and Liu Tung sheng in Beijing. Open Geosciences 10, 925–931.10.1515/geo-2018-0073]Search in Google Scholar
[Smalley, I.J., Gaudenyi, T. & Jovanovic, M., 2014. Charles Lyell and the loess deposits of the Rhine valley. Quaternary International 372, 45–50.10.1016/j.quaint.2014.08.047]Search in Google Scholar
[Smalley, I.J., Kels, H., Gaudenyi, T. & Jovanovic, M., 2016. Loess encounters of three kinds: Charles Lyell talks about, reads about, and looks at loess. Geologos 22, 71–77.10.1515/logos-2016-0006]Search in Google Scholar
[Steininger, J., 1822. Neue Beitrage zur Geschichte der Rheinische Vulkane. F. Kuppferberg, Mainz.]Search in Google Scholar
[Thomae, C., 1835. Der vulkanische Roderberg bei Bonn: Geographische Beschreibung seines Kraters und seiner Umbegungen. Bonn, 58 pp.]Search in Google Scholar
[Voltz, P-L., 1828. Uebersicht der Mineralogie der beiden Rhein-Departmente. C. Heitz, Strassburg, 317 pp.]Search in Google Scholar
[Wilson, L.G., 1972. Charles Lyell, The Years to 1841: The Revolution in Geology. Yale University Press, New Haven, 553 pp.]Search in Google Scholar