I am attaching a scan with some suggested measurements - for cut sizes and the theoretical finished size using 1/4 inch seams.
For block 1: - Unfinished size - 10-1/2 x 10 -1/2; finished size - 10 x 10
Piece 1A - Cut size - 2-1/2 x 2-1/2; finished size - 2 x 2
Piece 1B - Cut size - 2-1/2 x 6-1/2; finished size - 2 x 6
Piece 1C - Cut size - 6-1/2 x 6-/12; finished size - 6 x 6
Block 1 - Unfinished size - 10-1/2 x 10-1/2; finished size - 10 x 10
Block 2: - Unfinished size - 10-1/2 x 10-1/2; finished size - 10 x 10
All pieces use the 1A piece - 2-1/2 x 2-1/2; finished size - 2 x 2
Block 2 - unfinished size - 10-1/2 x 10-1/2; finished size 10 x 10