Frans Geffels (English Wikipedia)

Roberta Piccinelli, The Position of Artists at the Gonzaga Court (1587-1707), in: The Court Artists in Seventeenth-Century Italy, ed. by. E. Fumagalli, R. Morselli, Rome: Viella 2014, pp. 167-198

archive.org (Global: 6^th place; English: 6^th place)

Antonio Gobio and Geffels, Le essequie celebratesi nella chiesa delle MM. RR. Madri di S. Orsola di Mantoua: d'ordine della serenissima signora arciduchessa Isabella Clara d' Austria, duchessa di Mantoua, Monferrato, &c., per la morte dell' imperatrice augustissima Claudia Felice lei nipote, Mantua, Francesco Osanna, 1676 (in Italian)
Johnson, John Graver, 1841-1917; Berenson, Bernard, 1865-1959; Valentiner, Wilhelm Reinhold, 1880-1958, Catalogue of a collection of paintings and some art objects; John G. Johnson Collection (Philadelphia, Pa.), 1913, p. 97
Carl Friedrich von Rumohr, Geschichte der Königlichen Kupferstichsammlung zu Copenhagen, 1835, PP. 81-81

artcurial.com (Global: low place; English: low place)

Frans Geffels (Attributed), La main chaude at Art Artcurial Paris auction of 30 October 2007 lot 45 (in French)

artnet.com (Global: 2,153^rd place; English: 1,399^th place)

Frans Geffels, Figures playing music and dancing in a garden

bildarchivaustria.at (Global: low place; English: low place)

Johann Jakob Hofmann, Justus van den Nypoort, The Relief of Vienna on 12 September 1683 at the Austrian National Library (in German)

bonhams.com (Global: 7,169^th place; English: 4,428^th place)

Attributed to Frans de Geffels, Elegant figures merrymaking in an interior at Bonhams London auction of 19 March 2013 lot 27W

books.google.com (Global: 3^rd place; English: 3^rd place)

De liggeren en andere historische archieven der Antwerpsche sint Lucasgilde Volume 2, by Ph. Rombouts and Th. van Lerius, Antwerp, 1864, p. 75 (in Dutch)

chayette-cheval.com (Global: low place; English: low place)

Attributed to Frans Geffels, Place italienne animée de personnages at Chayette Cheval (in French)

christies.com (Global: 2,978^th place; English: 2,014^th place)

Vienna 1667 -- Sbarra, Francesco. Il pomo d'oro, Festa Teatrale Rappresentata in Vienna per l'augustissime nozze delle sacre cesaree reali Maestà di Leopoldo, e Margherita. Vienna: Matteo Cosmerovio, 1668 at Sotheby's

gelocal.it (Global: 1,491^st place; English: 3,920^th place)

ricerca.gelocal.it

Luca Ghirardini, Geffels, il fiammingo che ha firmato il barocco mantovanodi Archived 2022-06-29 at the Wayback Machine in Gazzetta di Mantova, 23 March 2017 (in Italian)

handle.net (Global: 102^nd place; English: 76^th place)

hdl.handle.net

Frans Geffels, Sacra cesarea Maesta, at the Rijksmuseum (in Dutch)

muo.cz (Global: low place; English: low place)

Miroslav Kindl, Galeazzo Gualdo Priorato (1606 Vicenza – 1678 Vicenza), Historia di Leopoldo Cesare I–III, 1670–1674 Archived 2021-12-06 at the Wayback Machine at Muzeum Umění Olomouc

rkd.nl (Global: 1,730^th place; English: 5,544^th place)

Frans Geffels at the Netherlands Institute for Art History (in Dutch)
Daniël de Middelaer at the Netherlands Institute for Art History (in Dutch)

rotarymantova.it (Global: low place; English: low place)

'Frans Geffels architetto a Mantova'. Un libro di Giulio Girondi e Maria Giuseppina Sordi Archived 2021-10-19 at the Wayback Machine (in Italian)

sns.it (Global: low place; English: low place)

artivisive.sns.it

Nicola Ivanoff, Daniele van den Dyck Archived 2021-01-22 at the Wayback Machine, in: Emporium, CXVIII(1953), pp. 244-250 (in Italian)

web.archive.org (Global: 1^st place; English: 1^st place)

Nicola Ivanoff, Daniele van den Dyck Archived 2021-01-22 at the Wayback Machine, in: Emporium, CXVIII(1953), pp. 244-250 (in Italian)
Luca Ghirardini, Geffels, il fiammingo che ha firmato il barocco mantovanodi Archived 2022-06-29 at the Wayback Machine in Gazzetta di Mantova, 23 March 2017 (in Italian)
Miroslav Kindl, Galeazzo Gualdo Priorato (1606 Vicenza – 1678 Vicenza), Historia di Leopoldo Cesare I–III, 1670–1674 Archived 2021-12-06 at the Wayback Machine at Muzeum Umění Olomouc
'Frans Geffels architetto a Mantova'. Un libro di Giulio Girondi e Maria Giuseppina Sordi Archived 2021-10-19 at the Wayback Machine (in Italian)

Frans Geffels (English Wikipedia)

academia.edu (Global: 121st place; English: 142nd place)

archive.org (Global: 6th place; English: 6th place)

artcurial.com (Global: low place; English: low place)

artnet.com (Global: 2,153rd place; English: 1,399th place)

bildarchivaustria.at (Global: low place; English: low place)

bonhams.com (Global: 7,169th place; English: 4,428th place)

books.google.com (Global: 3rd place; English: 3rd place)

chayette-cheval.com (Global: low place; English: low place)

christies.com (Global: 2,978th place; English: 2,014th place)

gelocal.it (Global: 1,491st place; English: 3,920th place)

ricerca.gelocal.it

handle.net (Global: 102nd place; English: 76th place)

hdl.handle.net

muo.cz (Global: low place; English: low place)

rkd.nl (Global: 1,730th place; English: 5,544th place)

rotarymantova.it (Global: low place; English: low place)

sns.it (Global: low place; English: low place)

artivisive.sns.it

web.archive.org (Global: 1st place; English: 1st place)

academia.edu (Global: 121^st place; English: 142^nd place)

archive.org (Global: 6^th place; English: 6^th place)

artnet.com (Global: 2,153^rd place; English: 1,399^th place)

bonhams.com (Global: 7,169^th place; English: 4,428^th place)

books.google.com (Global: 3^rd place; English: 3^rd place)

christies.com (Global: 2,978^th place; English: 2,014^th place)

gelocal.it (Global: 1,491^st place; English: 3,920^th place)

handle.net (Global: 102^nd place; English: 76^th place)

rkd.nl (Global: 1,730^th place; English: 5,544^th place)

web.archive.org (Global: 1^st place; English: 1^st place)