Costume sketches from mid 19th century productions of the opéra bouffe “La belle Hélène,” which has music by Jacques Offenbach and words by Henri Meilhac and Ludovic Halévy. Collections of the Bibliothèque nationale de France.

“Hélène” (Anna Judic). La Belle Hélène (Variétés 1876). Costume sketch for an 1876 Théâtre des Variétés production of the opéra bouffe “La belle Hélène.” with the role of Hélène played by Anna Judic. French. Drawing with watercolor. Jules Renard Draner (1833-1926), costume designer and artist. Collections of the gallica.bnf.fr/Bibliothèque nationale de France. Artwork itself in the public domain due to age. via https://gallica.bnf.fr/ark:/12148/btv1b64021775?rk=42918;4
“Achille” (Alexandre Guyon). La Belle Hélène (Variétés 1864). Costume sketch for an 1864 Théâtre des Variétés production of the opéra bouffe “La belle Hélène.” with the role of Achille played by Alexandre Guyon. French. Drawing with watercolor. Jules Renard Draner (1833-1926), costume designer and artist. Collections of the gallica.bnf.fr/Bibliothèque nationale de France. Artwork itself in the public domain due to age. https://gallica.bnf.fr/ark:/12148/btv1b64022444?rk=64378;0
“Pâris” (José Dupuis) La Belle Hélène (Variétés 1864). Costume sketch for an 1864 Théâtre des Variétés production of the opéra bouffe “La belle Hélène.” with the role of Pâris played by José Dupuis. French. Drawing with watercolor. Jules Renard Draner (1833-1926), costume designer and artist. Collections of the gallica.bnf.fr/Bibliothèque nationale de France. Artwork itself in the public domain due to age.https://gallica.bnf.fr/ark:/12148/btv1b64019714?rk=85837;2

“Ajax I” (Edouard Hamburger). La Belle Hélène (Variétés 1864). Costume sketch for an 1864 Théâtre des Variétés production of the opéra bouffe “La belle Hélène.” with the role of Ajax I played by Edouard Hamburger.. French. Drawing with watercolor. Jules Renard Draner (1833-1926), costume designer and artist. Collections of the gallica.bnf.fr/Bibliothèque nationale de France. Artwork itself in the public domain due to age. https://gallica.bnf.fr/ark:/12148/btv1b55003451r/f1.item.zoom
“Ménélas” (Jean Laurent Kopp). La Belle Hélène (Variétés 1864). Costume sketch for an 1864 Théâtre des Variétés production of the opéra bouffe “La belle Hélène.” with the role of Ménélas played by Jean Laurent Kopp. French. Drawing with watercolor. Jules Renard Draner (1833-1926), costume designer and artist. Collections of the gallica.bnf.fr/Bibliothèque nationale de France. Artwork itself in the public domain due to age. https://gallica.bnf.fr/ark:/12148/btv1b6402245j?rk=128756;0#
“Agamemnon” (Henri Couder). La Belle Hélène (Variétés 1864). Costume sketch for an 1864 Théâtre des Variétés production of the opéra bouffe “La belle Hélène.” with the role of Agamemnon played by Henri Couder. French. Drawing with watercolor. Jules Renard Draner (1833-1926), costume designer and artist. Collections of the gallica.bnf.fr/Bibliothèque nationale de France. Artwork itself in the public domain due to age. https://gallica.bnf.fr/services/engine/search/sru?operation=searchRetrieve&version=1.2&query=%28dc.title%20all%20%22La%20belle%20H%C3%A9l%C3%A8ne%2C%20op%C3%A9ra-bouffe%20de%20Meilhac%22%29&keywords=La%20belle%20H%C3%A9l%C3%A8ne,%20op%C3%A9ra-bouffe%20de%20Meilhac&suggest=3
“Calchas” (Pierre-Eugène Grenier). La Belle Hélène (Variétés 1864). Costume sketch for an 1864 Théâtre des Variétés production of the opéra bouffe “La belle Hélène.” with the role of Calchas played by Pierre-Eugène Grenier. French. Drawing with watercolor. Jules Renard Draner (1833-1926), costume designer and artist. Collections of the gallica.bnf.fr/Bibliothèque nationale de France. Artwork itself in the public domain due to age. https://gallica.bnf.fr/ark:/12148/btv1b550034810/f1.item.zoom

And I thank whoever put the article about the premiere of La Belle Hélène on Wikipedia as that is where I found the full names of most of the actors.