In BlockBase you can search by designer. If you do a search for Aunt Martha you come up with 121 pieced patterns. The company (there was no actual Aunt Martha) designed many innovative patterns in the 1930s.
Aunt Martha's bio from my book Women of Design.
Some of the Aunt Martha patterns in BlockBase.
They published a lot of innovative applique too.
This particular design may have been published
in her magazine Workbasket in 1941.
A version maybe from the 1950s or '60s.
Aunt Martha is still in business. Her logo's been
modernized if the woman herself still lags behind current fashion for aunts.
Lattice Fan by Jean Stanclift and Barbara Brackman.
Quilted by Lori Kukuk. 42" x 42"
Jean and I did this version for my book Women of Design about Quilts in the Newspaper. I picked the colors and drew the pattern. Jean pieced it. Lori quilted it. It's one of my favorite group quilts we did.
The book is out of print, but you can see a preview which includes the pattern for Lattice Fan.
Here's a post on another clever Aunt Martha/Workbasket design: