Lee Macklin has given presentations at several AHSGR and GRHS National Conventions. They are available below for viewing or downloading (PDF versions).
Current list of presentations posted are:
"DNA and Alzheimer's" (2019 AHSGR)
"Analyzing Your 23andMe DNA Results (Medical)" (2018 AHSGR and GRHS)
"Analyzing Your AncestryDNA Results" (2018 AHSGR and GRHS)
"A Great DNA Story - Part 1: How an Adopted Child Finds Her Biological Mother" (2016 AHSGR)