How to Build a Rolling Library Ladder - This Old House
Amazon.com: Stand Up Black Rolling Library Hardware, with Extention Track/Rail and Sliding Roller (No Ladder), Round Tube Mobile Ladder Library Full Set Hardware Track - 3.3ft-20ft : Home & Kitchen
LADDER Plus Library Kit Hardware Option 6.6 Ft Long Rolling - Etsy
3.3ft 6.6ft Rustic Black Round Tube Sliding Barn Ladder Library Ladder Track Kit - Slides - AliExpress
Library Ladders - Ladders - The Home Depot
Wood Ladder, Loft Ladder, Library Ladder: Made to Order! | artfxwoodworks
Library Ladders - Alaco Ladder
Hand Crafted Steel Rolling Library Ladder by Andrew Stansell Design | CustomMade.com