As part of my role with the Catholic Archives Society, I routinely monitor the internet for Catholic archival material being offered for sale and work with relevant repositories to ensure its safe acquisition. In 2023 a bound collection of 19 original manuscript letters from Cardinal Henry Edward Manning to the Rev. Thomas Penyngton Kirkman (1806-1895) appeared for sale -- never previously shared in public. In them Manning discusses his views on philosophy and evolution, his views on Herbert Spencer, and even sketches of his ideas for a solution to Pascal’s Theorem.