Endnote 1 – Strata: Milestone: Helmut Koester (1926–2016)
Birger A. Pearson, The Future of Early Christianity: Essays in Honor of Helmut Koester (Minneapolis: Fortress, 1991); James D. Smith III and Philip Sellew, eds., The Fabric of Early Christianity: Reflections in Honor of Helmut Koester by Fifty Years of Harvard Students (Eugene, OR: Pickwick Publications, 2007).