A Radnorshire Book from Canada?

I've posted before about the Duggan brothers from Llansantffraid yn Elfael who made something of a splash in Albertan politics back in the early years of the last century, here and here. Now a correspondent writes to point out that Joseph Duggan (pictured) penned a volume about his little Welsh home called "The Unforgotten Valley, Studies of Life and Character on the Welsh Border". Anymore information about this book?

Of course Duggan married the Builth contralto Bessie Evans, daughter of local musical maestro Llew Buallt and readers might be interested in a snippet from the recently published treasury of local history Cymru Evan Jones. It seems that Llew (Evan Evans) was living at Melin Dol Llinwydd on the Duhonw brook during the great flood of 1853. Such was the height of the deluge that the family had to seek shelter in the loft and then as the waters continued to rise were forced to break through onto the roof. Their troubles were not over, as half the building suddenly collapsed into the torrent, young Evan would have been seven years old at the time.