| Sage Of Durango |
| Sagebrush Photography |
| San Juan Publishing Group |
| Sanborn Ltd. |
| SAR Press |
| Savage Parks Press |
| SCA Publishing |
| Schiffer Publishing |
| Schildge Publishing Co. |
| Scholastic |
| Scholastic Library Publishing |
| Sea Turtle Publishing |
| Seal Rock Publishing |
| Seasoned Chef Cooking School |
| Self-Propulsion Publishing |
| Sequoia Natural Hist Assn |
| Sharp End Publishing |
| Shetland Press |
| Shining Mountain Publishing |
| Shiva Press |
| Shook Book |
| Shook Book Publishing |
| Shop Chicken Publications |
| Shoshoni Yoga Retreat |
| Sidekick Off Road |
| Sidewinder Publishing |
| Sigma Books |
| Simon & Schuster |
| Simon Schuster Childrens |
| Singing Rock Publishing |
| Sketches From the Heart |
| Skyline Press |
| Sleeping Bear Press |
| Solar Survival Press |
| Sourcebooks, Inc. |
| Sourdough Studio |
| South Valley Ink |
| Southpaw Publications |
| Southwest Environmental Center |
| Spiralbound Studio Publishing |
| Squeezy Press |
| Stackpole Books |
| Stanley Museum |
| Steamboat Springs WSC |
| Stephen M. Voynick |
| Sterling Publishing Company |
| Straight Arrow Publishing Comp |
| Straw Revolution |
| Strings in the Mountains |
| Student Publications |
| Style Matters LLC |
| Summit Books |
| Sun Time Productions |
| Sundance Publications |
| Sunflower Publishing |
| Sunstone Press |
| SUNY Press |
| Sylvan Dell |