31. Letterlocking the Matrix

In today’s episode, we will be talking about stamps, pen clubs,  the postmark experiment, and the table of letterlocking Erasable Fountain Pen ink: https://www.instagram.com/p/CO_PXcODU1G/https://www.kiwiinks.com/collections/erasable/products/erasable-ink Another Space Retro51: https://www.instagram.com/p/CPBS5_PjPMH/?utm_source=ig_web_copy_linkSun Science Stamps:https://about.usps.com/postal-bulletin/2021/pb22572/html/info_004.htm Postmarks: https://about.usps.com/postal-bulletin/2021/pb22572/html/info_006.htm https://www.wsel.com/sites/default/files/uploads/pdfs/EMA_History.pdfUnlocking History, Table of Letterlockinghttp://letterlocking.org/categoriesMetric Paper video from CPG Grey