Monarch Andalusian (1930s) was a soft wool yarn. It was 4-ply and sold in 1 oz balls (1934). It was suitable for Infant and childrens garments, including carriage covers. Correct weight for Pullovers, Ladies Hats, Scarves and Berets.
Monarch Crepe de Laine was a novelty rayon and wool yarn, likely a fingering weight, as most yarns of the time were.
Monarch Dove was a light fingering weight yarn made of 100% wool.
Monarch Fairy (1930s) was a 2 ply yarn. It was sold in 1 oz balls. It was suitable for saques, bonnets, pullovers, vests, bands, etc. In 1934 it was available in 30 shades.