Hungarian Quantum Chemistry: Part A – Early and Recent History, Volume 93 in the Advances in Quantum Chemistry series, highlights the historical and contemporary contributions of scientists to the field of molecular electronic structure theory. This volume offers a curated collection of chapters detailing the pioneering developments, influential researchers, and academic institutions that shaped quantum chemistry in Hungary and beyond. From foundational theoretical work to advancements in applications across chemistry and biology, the volume provides both scholarly reflection and technical insight into decades of quantum chemical innovation. It also showcases the ongoing legacy of Hungarian quantum chemists through personal narratives, historical retrospectives, and institutional profiles. - Provides the authority and expertise of leading contributors from an international board of authors - Presents the latest release in the Advances in Quantum Chemistry series - Updated release includes the latest information on this timely topic