Rabbi Klonimus Kalman Shapira’s Aish Kodesh, found among the Warsaw Ghetto archives, and published posthumously, is available in English now. I have it in Hebrew.
https://www.feldheim.com/aish-kodesh-hebrew-only-1-1
https://www.amazon.com/Holy-Fire-Teachings-Kalonymus-Shapira/dp/0765760266/ref=sr_1_2?crid=1CWMGQV0L73JS&dib=eyJ2IjoiMSJ9.axxEl5UHqPTr3y8UU10ZPhr2dh6QcxEXMCvtfcLIRILdM-mc53tCBOfNJ7hUy0kE7CJPxz5orRCEMnP3GX0kiTnh1gSNE999iZFEZPH_m9mrmfkZWghswasosdagt1D_X4u9GLv9g2q3xTYgeLnsvVwTnzXn4TlaI1dEPiPx2chxQyecQB-4np2YhPm7ZOAZxQ9DCEP0Iwpl_VaJz3ibu9hwb4Ubrxo76dTDBn6dQBo.gDZ1A14Q-gCFclcPALvOlcNRJFl2vFEsioWnOb9orfI&dib_tag=se&keywords=Aish+Kodesh&qid=1714426378&sprefix=%2Caps%2C231&sr=8-2
Thank you