The Carmichael Symposium at the University of Iowa, part of the 100-year celebration of the department's founding, was excellent. Students and collaborators of Greg's from around the world returned to Iowa City and discussed his accomplishments. Some photos of the event can be found https://engineering.uiowa.edu/cbe/100th/milestone-celebration

and I have more about it on LinkedIn  https://www.linkedin.com/posts/charles-stanier-20624a6_it-is-a-joy-to-participate-in-todays-carmichael-activity-7448042621018624001-hsFH?utm_source=share&utm_medium=member_desktop&rcm=ACoAAAEagKYBQl_8Q-zb9JfejWbLC68Zw_73s6k 

And Greg's spouse - Meg Eginton, is producing a book of extended abstracts.