- Series: The Heinlein Letters Series Record # 40814
- The Heinlein Letters
- 1 The Heinlein Letters: Volume I (2011) [NF] by John W. Campbell, Jr. and Robert A. Heinlein
- 2 The Heinlein Letters: Volume II (2011) [NF] by Robert A. Heinlein
- 3 The Heinlein Letters: Volume III (2012) [NF] by Robert A. Heinlein