The Big X
Cipher, Shakespeare and some Ye Olde Multiplication with Rob Eastaway.
Rob Eastaway's book Much Ado About Numbers
Amazon (US): https://amzn.to/3zFinog
Amazon (UK): https://amzn.to/3VIIp1u
And on bookshop.org: https://uk.bookshop.org/p/books/much-ado-about-numbers-rob-eastaway/7619073
More Rob books: https://amzn.to/3XR6N3Q
Rob Eastaway's website: https://robeastaway.com
Objectivity Videos: https://www.youtube.com/c/objectivityvideos
With thanks to Dulwich College Archive: https://www.dulwich.org.uk/about/history/the-archives
Check out The Ground of Arts by Robert Recorde on Google Books: https://books.google.co.uk/books?id=i8NJomIVzlgC
Also discussing the origin of the multiplication symbol.