This document is a letter of recommendation for Katharina Vester from Morton J. Cowan, MD. It describes how Katharina helped guide the Allergy Immunology Fellowship Program through a complicated application process when the original coordinator was overwhelmed, leading to a successful completion and approval. It notes that Katharina was also present for a difficult site visit and organized program documents well before leaving. The letter strongly recommends Katharina and describes her as bright, well-organized, and a pleasure to work with.