- Series: The Lovecraft Letters Series Record # 32023
- Webpages: hplovecraft.com, WorldCat
- The Lovecraft Letters
- H. P. Lovecraft: Letters to Henry Kuttner (1990) [NF] by H. P. Lovecraft
- H. P. Lovecraft: Letters to Richard F. Searight (1992) [NF] by H. P. Lovecraft
- Mysteries of Time and Spirit: Letters of H. P. Lovecraft and Donald Wandrei (2002) [NF] by S. T. Joshi and H. P. Lovecraft and David E. Schultz and Donald Wandrei
- Letters to Alfred Galpin (2003) [NF] by H. P. Lovecraft
- Letters From New York (2005) [NF] by H. P. Lovecraft
- Letters To Rheinhart Kleiner (2005) [NF] by H. P. Lovecraft
- O Fortunate Floridian: H. P. Lovecraft's Letters to R. H. Barlow (2007) [NF] by H. P. Lovecraft
- Essential Solitude: The Letters of H. P. Lovecraft and August Derleth (2008) [NF] by August Derleth and S. T. Joshi and H. P. Lovecraft and David E. Schultz
- Letters to James F. Morton (2011) [NF] by H. P. Lovecraft
- Letters to Elizabeth Toldridge and Anne Tillery Renshaw (2014) [NF] by S. T. Joshi and H. P. Lovecraft and David E. Schultz
- Letters to Robert Bloch and Others (2015) [NF] by S. T. Joshi and H. P. Lovecraft and David E. Schultz
- H.P. Lovecraft: Letters to C. L. Moore and Others (2017) [NF] by S. T. Joshi and H. P. Lovecraft and David E. Schultz
- H. P. Lovecraft: Letters to Maurice W. Moe and Others (2017) [NF] by S. T. Joshi and H. P. Lovecraft and David E. Schultz
- Selected Letters (H. P. Lovecraft)
- 1 Selected Letters: 1911—1924 (1965) [NF] by H. P. Lovecraft
- 2 Selected Letters: 1925—1929 (1968) [NF] by H. P. Lovecraft
- 3 Selected Letters: 1929—1931 (1971) [NF] by H. P. Lovecraft
- 4 Selected Letters: 1932—1934 (1976) [NF] by H. P. Lovecraft
- 5 Selected Letters: 1934—1937 (1976) [NF] by H. P. Lovecraft
- An Index to the Selected Letters of H. P. Lovecraft (1980) [NF] by S. T. Joshi