I'm reading this amazing new biography on Kindle - completely free of charge. I've read lots of bits about "Slasher" Richardson but this puts everything together in one place and has loads of new info never published before. (It's available in print as well for those who hate reading on devices.)
https://www.amazon.co.uk/Mary-Raleigh-Richardson-suffragette-arsonist-ebook/dp/B0F2SGLMN3/ref=sr_1_1?dib=eyJ2IjoiMSJ9.HL5O-p2L6dDZm4uGOQdl5g.UDdlgPkLMiTr5RKgWOKHsjhnA5FTEEfF7xeo6qSorWU&dib_tag=se&keywords=mary+raleigh&qid=1743588902&s=digital-text&sr=1-1