The Yellow Books
During the 'lockdown' of 2020 Mr. Martin Probert prepared for publication six works, which reflect his divers interests over the last fifty years.
They comprise Astronomy, Poetry and Shakespeare, together with the record of the epistolary correspondence that resulted in his Marriage, and extend to Humorous Verse and Children's Fiction. The books are presented through excerpts (chosen by the author). Links allow further exploration for interested readers.
The collection is available here.
String Figures and Cat's Cradles
His account of The Survival, Origin and Mathematics of String Figures dates to c. 1998 - 2003, and the last light revision was made in 2013.
The original appearance of The Website is retained.
Four Ball Juggling
Four Ball Juggling: From Simple Patterns to Advanced Theory is work of 1995.
The Introduction and Table of Contents, together with one or two Illustrations, are reproduced.