These should be available at most fabric stores.
Information compiled by Rosalyn Garnett, Westbank, British Columbia.

PATTERNS THAT ARE READY-TO-USE:

Butterick - #4655

A prairie skirt and blouse pattern.

Butterick - #4656

A circle skirt and blouse pattern.

Simplicity - #7719

Three different dress styles. They look a little short-waisted in the picture on the pattern package.

Kwik-Sew - #2102

Three different skirts and blouses.

PATTERNS THAT REQUIRE ADAPTATION:

McCalls - #9254

A traditional western dress that has a nice bodice and a long skirt. It would require an alteration to the skirt.

McCalls - #8043

Wedding dress pattern. Has a flattering neckline, trim variations, and five sleeve variations.

MAIL ORDER CATALOG COMPANY:

Vee Gee Pattern Company

Box 23 Hamlin, Texas 79520 U.S.A.

Catalog cost: $1.50 plus $ .50 postage and handling (U.S. currency)

In British Columbia, Kwik-Sew patterns are available at Fanny's Fabrics.
Most square dance shops carry square dance patterns, both ladies and mens wear designs.

A tip in finding patterns adaptable for square dance costumes is to check thrift stores.
Many times you can find wedding dress, evening gown and blouse/skirt patterns
that make lovely square dance outfits at very reasonable cost.

Happy sewing!

 Links to Stores that sell patterns
 

Square Dance & Western Wear Patterns For Men & Women