Cachet

Cactus Game Design

Cadron Creek

Calkins Creek Books

Campfire

Canadian Handwriting

Canadian Homeschooler

Canadian ISBN Agency

Candlewick Press

Canon Press

Capstone Press

Carlton Bools

Carolrhoda Books

Carpenter's Son Publishing

Carson Dellosa

Cartwheel Books

Castle Quay Books

Castle Rock Creative

Center for Literary Education

CF4kids

Chalkboard Publishing

Charlesbridge

Charlotte Mason Research Co

Chelsea Green Publishing

Cherry Lake Publishing

Chicago Review Press

Child Size Masterpieces

Child's Geography

Chosen

Christendom Press

Christian Art Publishers

Christian Audio

Christian Focus Publications

Christian Liberty Press

Christian Logic

Christian Studies

Chronicle Books

Clarion Books

Classical Academic Press

Classroom Complete Press

CLC Publications

Clementoni

Cobble Hill Puzzle Company

Color the Classics

Common Sense Press

Compass Classroom

Concordia Publishing House

Cool Springs Press

Cornel

Cornerstone Curriculum Project

Cottage Door Press

Counterpoint Press

Crabtree

Crayola

Createspace Independent Pub

Creative Homeowner

Creston Books

Critical Thinking Press

Crossway

Crystal Clarity Publishers

Cumberland House

Currency