It's a Mystery

I'm in charge of the guild's mystery quilt this year.  It's so fun to give clues each month and answer questions that the members come up with as we move along!  I have not completed this quilt yet, but instead opted to quilt along, but just one month ahead of the group.  This way,  I am able to show the completed blocks as an example at each guild meeting when the clue is revealed.  With the designer's permission, I have broken the piecing instructions down into 6 clues, each containing 2 parts.

This is clue one, Units #1 & #2.  I gave this clue in January, 4-patches and half-square triangles.

And clue two was given this month at the guild meeting.  Units #3 & #4 are more half-square triangles and quarter-half triangles.

I'm sure many of you are beginning to recognize this design.  If you know who the designer is and which quilt this is...please do not spoil it for the others in the comments (but feel free to comment otherwise - just please don't give it away).  I'll give the designer credit at the end of our mystery, of course!

I'd be happy to answer any questions and/or discuss this with you through email :)  

Linking up to Sew Darn Crafty @ Sew Many Ways