Not every single one of the twenty-four, I'm particularly interested in the histories of the medieval dynasties such as Tang and Jin. Have the histories been translated and available to the public?
If you'd asked me 5 years ago,I woulda said you would have better luck hoping for an English translation of the Hōgen monogatari. Luckily,time has proven me wrong,and as of last year (2019),Li Shi has published a complete English translation of the Twenty-Four Histories ( 二十四史) on Kindle here . You might recognize him as the author of a whole variety of monographs in Deep into China histories in which he writes on general topics like the economic history of the Qing or the art history of the Ming. His primary source was in fact the Twenty-Four Histories,which he has taken the time to translate and put up. At less than 10 bucks,I'd say it's a real steal for anyone who wants to read them. I hope this helps !
EDIT : As u/mikedash pointed out (and I believe he has a copy of said book),the translation is lacking in certain ways. Please take note before purchasing!