Tweet $10.00 – $25.00 Within 24 hours of purchasing this virtual lecture, you will receive a private YouTube link to view the presentation. Please be sure you provide correct contact information when checking out. Lecture Choose an optionJuly 25 - 'How Clinton’s Ditch Made a Way for Amos Eaton’s “Blaze of Geological Zeal”' with David SpanagelDecember 3 - A Deeper Dive with Mark Kurlansky, author of SaltClear A Deeper Dive: Recorded Virtual Lecture quantity Add to cart SKU: N/A Categories: Misc., Video