Closer invesitgation of the picture indicates the following:
1. 1.5" finished size squares for the log cabin centers.
2. 1.5" finished size strips around the log cabin.
3. The strips were applied in a counter-clockwise fashion.
4. 5 strips per side x 4 sides + center = 21 pieces per log cabin.
5. 2 strips per side x 4 sides + center = 9 pieces per 1/2 log cabin.
6. 5 lighter colored and 5 darker color fabrics are used for each block.
7. The same darker colored fabric was used for all the centers.
8. White sashing is 1.5" finished size also.
Using the Eleanor Burns Quilt in a Day method of piecing log cabin blocks:
1. Cut all strips 2" wide. Will yield 1.5" finished size.
2. Cut the center 2" long from a 2" strip Will yield 1.5" finished size.
3. Strips 1 & 2 = lighter colored fabric #1.
Strips 3 & 4 = darker colored fabric #1.
Strips 5 & 6 = lighter colored fabric #2.
Strips 7 & 8 = darker colored fabric #2.
Strips 9 & 10= lighter colored fabric #3.
Strips 11 & 12 = darker colored fabric #3.
Strips 13 & 14 = lighter colored fabric #4.
Strips 15 & 16 = darker colored fabric #4.
Strips 17 & 18 = lighter colored fabric #5.
Strips 19 & 20 = darker colored fabric #5.
4. Sew the first strip to the center. Cut off the strip to match the center's length.
5. Turn counter-clockwise and sew on the second strip. Cut off the strip to match the length of the center + the first strip.
6. Continue in a counter-clockwise manner, untill all 20 strips have been applied to the block.
7. For the smaller 1/2 log cabin blocks, do the above using only 8 strips around the center.
I hope this helps.