Knitting without "specimens"; the modern book of school knitting and crochet (1915)
Claydon, Ellen P, Claydon, C. A., joint author · New York, E. P. Dutton & Company · leaf 28
KNITTING. 23 Fig. 15. Casting-off. Third Method : to produce a Rounded Method of- Closing up an Opening. Fig. 16. Casting-off. Fourth Method : to produce a Square-closed End. (Step 1.)
Knitting · Crocheting
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.