(The poster dates on this page come from the copyright dates on the posters, info from the Library of Congress Performing Arts Poster Collection).
This is the earliest Kiralfy poster I've found, from 1873. Haniola was evidently the star, Imre and Bolossy hard to tell apart (but distinguishable), Katie and Emily still performing. (The sisters left the stage in the mid-1870's when they married).
(Click on a thumbnail to enlarge)
In the early 1870's, the Kiralfys went from "merely" performing to producing their own Grand Spectacles. (There were many more than these - these are just the posters still available).
Keep in mind the scale of all these productions and then look at the dates - they kept up a feverish pace!
Paradise Lost, London, 1873
Around the Word in 80 Days, Niblo's Garden (New York), 1877.
Around the World in 80 Days, Boston, 1882.
Black Crook, Boston, 1882.
Michael Strogoff, Boston, 1882
Excelsior, NY, 1883
Sieba and the 7 Ravens, NY, 1884
Around the World in 80 Days, Chicago, 1885
The Ratcatcher, Chicago, 1885
Black Crook, NY, 1886
Enchantment, NY, 1886
(After the breakup of Imre and Bolossy, the posters below are Bolossy productions)
Dolores, NY, 1887 (Paris, 1887; Boston 1888)
Seige of Troy, NY, 1887
Mathias Sandorf, NY, 1888
Savage South Africa, 1903
The Orient (date unknown?)