Both sources state that he earned multiple millions of dollars during his career on stage and that during his lifetime he may have been the highest paid entertainer in the field of magic.

He remained part of the social circles of entertainment personalities in Southern California, counting among his friends stars like Marion Davies, Margaret Sullavan, Jackie Coogan, Harold Lloyd, and Clara Bow.

[3] With respect to the question of psychic phenomena, magic, spiritualism, and the occult, Alexander led a sort of double life, especially after he retired from the stage.

On the other hand, like the Zancigs, he never completely discounted the possibility that Spiritualism might contain elements of truth, and from 1919 onward he also operated a publishing house, the C. Alexander Publishing Company in Los Angeles, California, which released his own astrological, pro-Spiritualist, and New Thought material, including a 5-volume series called The Inner Secrets of Psychology and a booklet for his students titled Personal Lessons, Codes, and Instructions for Members of the Crystal Silence League.

The latter is a manual that explains the technique of affirmative prayer, and presents methods for the development of Spiritualistic mediumship, and divination through crystal ball scrying.

The back cover displays Alexander's connection to the New Thought movement, for it lists an extensive array of titles that Alexander offered for sale at his book shop, including works written and published by the New Thought author William Walker Atkinson under his own name and also under the pseudonyms Theron Q. Dumont, Yogi Ramacharaka, and Swami Panchadasi; as well as a book by Atkinson's sometime co-author, the occultist L. W. de Laurence.

[3][5] Charvet recounts in his biography that Alexander spent time in local jails (including a jail break in Oklahoma in 1906) and federal prison in Washington state, went on trial for attempting to extort $50,000 from oilman millionaire G. Allan Hancock, made a failed attempt to outrun the authorities in a high-powered speedboat loaded with bootlegged liquor in the Queen Charlotte Strait between Canada and the U.S., and admitted to killing four men.

[5] A newspaper account in which it was stated that Alexander shot and killed a street mugger who attacked him, and was let off on the grounds of self-defense, was cited by Charvet.

[3] Alexander invested a great deal of money into the production and printing of beautiful chromolithograph posters for his stage show.

[3][5] Alexander was mentioned by name in a 1950s episode of the NBC television production Playhouse 90 called "The Great Sebastians," starring Alfred Lunt and Lynn Fontanne as a pair of stage magicians who resembled his old friends The Zancigs.