The Baroque and Rococo are well covered in the Oxford Art Online. Among the relevant articles, see .
"Baroque" (Kerry Downes)
"Baroque Revival" (Alastair Service)
“Blondel, Jacques-François” (Dana Arnold)
"Rococo" (Richard John & Ludwig Tavernier)
"Rococo revival" (Margaret Barlow)
See also …
"18th century French aesthetics," Stanford Encyclopedia of Philosophy
“Baroque” & “Rococo” smArt History.org
The Eighteenth Century (featuring “theoretical and interpretive research on all aspects of Western culture from 1660 to 1830,” PDFs from 1979, with a 3-year delay, are available via Jstor)
Eighteenth-Century Studies (journal of the American Society for Eighteenth-Century Studies, PDFs from 1967, with a 5-year delay, are available via Jstor)
Many baroque and rococo sites are now tourist destinations, including Blenheim Palace, Claydon House, Château de Vaux-le-Vicomte, Versailles, etc. The Bavarian Department of State-owned Palaces, Gardens and Lakes is responsible for many Baroque and Rococo sites, including Nymphenburg Palace, and the Würzburg Residence.
Kaufmann, Emil, Architecture in the age of reason: Baroque and Post-Baroque in England, Italy, and France, Archon Books, NA590.K3
Kubler, George & Martin Soria, Art and architecture in Spain and Portugal and their American dominions, 1500 to 1800, Penguin Books, N7104.K8 1959
Bauer, Hermann, Baroque, Taschen, ND182.B3 B38 2006
Blunt, Anthony & Richard Beresford, Art and Architecture in France 1500-1700, Yale University Press, N6845.B59 1998
Bohn, Babette, & James M. Saslow, A Companion to Renaissance and Baroque art, Wiley-Blackwell, 2012 (ebook via ProQuest Ebook Central)
Brown, Beverly Louise, The genius of Rome, 1592-1623, Royal Academy Books, ND620.G46 2001
Fagiolo, Marcello, et al., Roma barocca: Bernini, Borromini, Pietro da Cortona, Electa, N6920.R559 2006
Hopkins, Andrew, Italian Architecture from Michelangelo to Borromini, Thames & Hudson, NA1115 .H66 2002
Levy, Evonne Anita, Propaganda and the Jesuit Baroque, University of California Press, N7865 .L48 2004
Levy, Evonne and Kenneth Mills, Lexikon of the Hispanic Baroque: Transatlantic Exchange and Transformation, University of Texas Press, 2014 (ebook via ProQuest Ebook Central)
Loh, Maria H., “New and improved: repetition as originality in Italian Baroque practice and theory,” The Art Bulletin, Septempber 2004, p. 477-504
Panofsky, Erwin, “What is Baroque?” in Three Essays on Style, MIT Press, N7445.2.P36 1995
Reigl, Alois, The Origins of Baroque art in Rome, Getty Research Institute, N6920.R4813 2010
Steinberg, Leo, Renaissance and baroque art : selected essays, University of Chicago Press, ND170 .S84 2020
Wittkower, Rudolf, “Carlo Rainaldi and the Roman architecture of the full Baroque,” The Art Bulletin, June 1937, p. 242-313 (PDF available via Jstor)
Wittkower, Rudolf, “S. Maria della Salute: scenographic architecture and the Venetian Baroque,” Journal of the Society of Architectural Historians, March 1957, p. 3-10 (PDF available via Jstor)
Wittkower, Rudolf, et al., Art and Architecture in Italy: 1600-1750, Yale University Press, N6916.W5 1999 volumes1-3
Wittkower, Rudolf, Studies in the Italian Baroque, Thames & Hudson, NA1116.5.B3 W57 1975b
Balon, Hilary, The Paris of Henri IV: architecture and urbanism, MIT Press, NA9050.5.B3 1991
Habel, Dorothy Metzger, "When all of Rome was under construction" the building process in Baroque Rome, Pennsylvania State University Press, NA9070.H33 2013
Heilmann, Christoph H., “Acqua Paola and the urban planning of Paul V Borghese,” The Burlington Magazine, October 1970, p. 656-663 (PDF via Jstor)
Krautheimer, Richard, The Rome of Alexander VII, 1655-1667, Princeton University Press, NA9204.R7K7 1985
Pinto, John. "The Trevi fountain and its place in the urban development of Rome," AA Files, #8, 1985, p. 8-20 (PDF via Jstor)
Stevenson, Frederic R., “Copenhagen, 1600-1700: an outstanding city planning achievement,” Journal of the Society of Architectural Historians, January 1944, p. 18-40 (PDF via Jstor)
Zucker, Paul, “Space and movement in High Baroque city planning,” The Journal of the Society of Architectural Historians, March 1955, p. 8-13 (PDF via Jstor)
Deleuze, Gilles, The Fold: Leibniz and the Baroque, University of Minnesota Press, B2598.D4513 1993
Dietz, Bettina, "Mobile objects: the space of shells in eighteenth-century France," The British Journal for the History of Science, #3, 2006, p. 363-382
“Establishing the Place of Art,” in Charles Harrison, et al., Art in theory, 1648-1815: an anthology of changing ideas, Blackwell Publishers, N6490.A78 2001
Harbison, Robert, Reflections on Baroque, Reaktion Books, NX451.5.B3H37 2000 (ebook also available via ProQuest Ebrary)
Howe, Stephen, Empire: a very short introduction, Oxford University Press, D217.H68 2002
Mullett, Michael, The Catholic Reformation, Routledge, 2002 (ebook via ProQuest Ebrary)
Ndalianis, Angela, Neo-Baroque aesthetics and contemporary entertainment, MIT Press, PN1995.N374 2004
Saisselin, Rémy G., Enlightenment against the Baroque, University of California Press, CB411.S23 1992
Teyssot, Georges, “Baroque topographies,” Assemblage, #41, 2000, p. 79 (PDF available via Jstor)
Conan, Michel, Baroque garden cultures: emulation, sublimation, subversion, Harvard University Press, SB457.536B37 2005
Lawrence, Henry W., "Baroque Europe: The Seventeenth Century," in City trees : a historical geography from the Renaissance through the nineteenth century, University of Virginia Press, SB435.6.E85 L39 2006
Rogers, Elizabeth Barlow, "The garden as theater: Italian Baroque and Rococo gardens," in Landscape design : a cultural and architectural history, Harry N. Abrams, SB470.5 .R64 2001
Thompson, Ian H., The Sun King's garden : Louis XIV, Andre Le Nôtre, and the creation of the gardens of Versailles, Bloomsbury, SB470.L4 T46 2006
Baur, Eva Gesine, Rococo, Taschen, ND188.R6B38 2007
Carl, Klaus & Victoria Charles, Art History Rococo, Parkstone International, 2014 (ebook via ProQuest Ebook Central)
Gordon-Smith, Maria, “The Influence of Jean Pillement on French and English decorative arts Part One,” and Part Two, Artibus et Historiae, #41, 2000, p. 171-196 (PDF available via Jstor)
Hitchcock, Henry Russell, Rococo architecture in Southern Germany, Phaidon Books, NA1066 .H632 1968
Hyde, Melissa Lee, Making up the Rococo: François Boucher and his critics, Getty Research Institute, ND553 .B7H93 2006
Kimball, Fiske, “The Creation of the Rococo,” Journal of the Warburg and Courtauld Institutes, April 1941/July 1942, p. 119-123 (PDF available via Jstor)
Kimball, Fiske, The creation of the Rococo decorative style, Dover, N6846.5.R6 K55 1980