- 1898, William Blair Stewart, A Synopsis of the Practice of Medicine, E.B. Treat and Co., page 409:
- Paranœa may recover, but tends to fixed delusions and dementia.
- 1904–5, Robert Barr, The Speculations of John Steele, Frederick A. Stokes Company (1905), page 269:
- “Does paranœa ever lead to murder, Mr. Nicholson?”
- 1907, Nevada Legislature, Appendix to Journals of Senate and Assembly…of the Legislature, volume 23, page 53, table XXII: “Form of mental diseases of those remaining December 31, 1906”:
- 1912, Elbert Hubbard, Hollyhocks and Goldenglow, The Roycrofters, page 92:
- Self‐pity is the first symptom of paranœa.