Emily R. Aguiló-Pérez and Melody Leung write: “The ALSC Library Service to Underserved Children and Their Caregivers committee is devoting the 2020–2021 calendar year to creating a vibrant, dynamic toolkit that provides ALSC members with up-to-date resources for working with marginalized populations. This month, our LSCUTC Toolkit focuses on resources for serving Spanish-speaking populations. According to Census data, Spanish is the second most spoken language in the United States with approximately 42 million speakers.”