Felled seam, or flat-fell seam, is a seam made by placing one
edge inside a folded edge of fabric, then stitching the fold
down. It includes a topstitched finish. It is useful for keeping
seam allowances flat and covering raw edges. The flat-felled
seam is the type of seam used in making denim jeans, although it
appears inside-out to reduce stitching. It is also used in
traditional tipi construction. - ^ Moyes, Patricia (1999).
Sewing Basics: Creating a Stylish Wardrobe With Step-By-Step
Techniques. Taunton Press. p. 94. ISBN 9781561582662. - ^
Hastings, Honey C. (Spring 1973). "Make & Fix It". Backpacker:
15. - ^ Holley, Linda A. (2007). Tipis, Tepees, Teepees: History
and Design of the Cloth Tipi. Gibbs Smith. p. 87. ISBN
9781586855116.