 For more information about the National Library Service for the Blind and Physically Handicapped Library of Congress, visit loc.gov slash thatallmayread or call 1-888-NLS-READ. What makes essential workers essential? We keep where you work and live clean and safe. We harvest fresh produce for your families to eat. We help you heal when you're sick. Essential workers help our nation run. You're in every corner of our country and come from all over the globe.