Held at the Karolinska Instituet, in Stockholm, Sweden, a recent Nobel Minisymposium, " Molecular Oncology From Bench to Bedside, " marked a very special event the celebration of George and Eva Klein s combined 160th birthdays. To honor this occasion, Volume 97 of Advances in Cancer Research brings together a collection of contributions by their former students, colleagues, and collaborators from the past fifty years dedicated to George and Eva Klein. Over a decade ago, the editors of ACR initiated a subdivision of the series called " Foundations in Cancer Research " to distinguish chapters that reflect extraordinary and historical developments in cancer research this volume of tributes honoring the Kleins bodies of work presented at the minisymposium are especially appropriate for the series and should serve as an important resource for future generations.