Sarah Pratt provided several details about JS' dalliances with married and single women and teenage girls to writer Wilhelm Ritter von Wymetal (his pen name was W. Wyl). The following text are excerpts (on pp. 54-62) from his 1886 book "Mormon Portraits or the Truth About the Mormon Leaders From 1830 to 1886: Volume First, Joseph Smith the Prophet. His Family and His Friends. A Study Based on Facts and Documents":
"Everybody knew in Nauvoo that the Partridge girls lived with Joseph a long time before he got his celebrated revelation about celestial marriage [polygamy], dated July 12, 1843. The Partridge girls were very good-natured. After Joseph’s death one was sealed to Brigham and the other to Apostle Amasa Lyman. Joseph’s taste [for females] was of very large dimensions, he loved them old and young, pretty and homely. He sometimes seduced mothers to keep them quiet about his connection with their daughters."
"The only ‘wives’ of Joseph that lived in the Mansion House were the Partridge girls. This is explained by the fact that they were the servants in the hotel kept by the prophet. But when Emma found out that Joseph went to their room, they had to leave the house."
"I [Sarah Pratt] have told you [W. Wyl] that the prophet Joseph used to frequent houses of ill-fame [bordellos]. Mrs. White, a very pretty and attractive woman, once confessed to me that she made a business of it to be hospitable to the captains of the Mississippi steamboats. She told me that Joseph had made her acquaintance very soon after his arrival in Nauvoo, and that he had visited her dozens of times. My husband (Orson Pratt) could not be induced to believe such things of his prophet. Seeing his obstinate incredulity, Mrs. White proposed to Mr. Pratt and myself to put us in a position where we could observe what was going on between herself and Joseph the prophet. We, however, declined this proposition."
"When Joseph had made his dastardly attempt on me, I went to Mrs. Harris to unbosom my grief to her. To my utter astonishment, she said, laughing heartily: 'How foolish you are! I don’t see anything so horrible in it. Why, I AM HIS MISTRESS SINCE FOUR YEARS!'
"Next door to my house was a house of bad reputation. One single woman lived there, not very attractive. She used to be visited by people from Carthage whenever they came to Nauvoo. Joseph used to come on horseback, ride up to the house and tie his horse to a tree, many of which stood before the house. Then he would enter the house of the woman from the back. I have seen him do this repeatedly.
"Joseph Smith [III], the son of the prophet, and president of the re-organized Mormon church, paid me a visit, and I had a long talk with him. I saw that he was not inclined to believe the truth about his father, so I said to him: 'You pretend to have revelations from the Lord. Why don’t you ask the Lord to tell you what kind of a man your father really was?' He answered: 'If my father had so many connections with women, where is the progeny?' I said to him: 'Your father had mostly intercourse with married women [pregnancies could be attributed to each woman’s husband], and as to single ones, Dr. Bennett was always on hand, when anything happened.'
"It was in this way that I became acquainted with Dr. John C. Bennett. When my husband went to England as a missionary, he got the promise from Joseph that I should receive provisions from the tithing-house. Shortly afterward Joseph made his propositions to me and they enraged me so that I refused to accept any help from the tithing-house or from the bishop. Having been always very clever and very busy with my needle, I began to take in sewing for the support of myself and children, and succeeded soon in making myself independent. When Bennett came to Nauvoo, Joseph brought him to my house, stating that Bennett wanted some sewing done, and that I should do it for the doctor. I assented and Bennett gave me a great deal of work to do. He knew that Joseph had his plans set on me; Joseph made no secret of them before Bennett, and went so far in his impudence as to make propositions to me in the presence of Bennett, his bosom friend. Bennett, who was of a sarcastic turn of mind, used to come and tell me about Joseph to tease and irritate me. One day they came both, Joseph and Bennett, on horseback to my house. Bennett dismounted, Joseph remained outside. Bennett wanted me to return to him a book I had borrowed from him. It was a so-called doctor-book. I had a rapidly growing little family and wanted to inform myself about certain matters in regard to babies, etc., -- this explains my borrowing that book. While giving Bennett his book, I observed that he held something in the left sleeve of his coat. Bennett smiled and said: 'Oh, a little job for Joseph; one of his women is in trouble.' Saying this, he took the thing out of his left sleeve. It was a pretty long instrument of a kind I had never seen before. It seemed to be of steel and was crooked at one end."
"You hear often that Joseph had no polygamous offspring. The reason of this is very simple. Abortion was practiced on a large scale in Nauvoo. Dr. John C. Bennett, the evil genius of Joseph, brought this abomination into a scientific system. He showed to my husband and me the instruments with which he used to 'operate for Joseph.' There was a house in Nauvoo, 'right across the flat,' about a mile and a-half from the town, a kind of hospital. They sent the women there, when they showed signs of celestial consequences [a swelling womb, chiefly]. Abortion was practiced regularly in this house."
"Bennett was the most intimate friend of Joseph for a time. He boarded with the
prophet. He told me once that Joseph had been talking with him about his troubles with Emma, his wife. 'He asked me,' said Bennett, smilingly, 'what he should do to get out of the trouble?' I said, 'This is very simple. GET A REVELATION that polygamy is right, and all your troubles will be at an end.'"
Notably, JS claimed to have received a 'revelation' on Feb. 16, 1832 that said "adulterers and whoremongers" will spend eternity in Mormonism's dreaded Telestial Kingdom (see D&C 76:103 for details - ref. https://www.lds.org/scriptures/dc-testament/dc/76.103?lang=eng).
But penning the 'revelation' that became D&C 76 happened before JS set his eyes on pretty teenager Fanny Alger working in the Smith home! Once she, the wife (Lucinda) of George Harris, and dozens of other "old and young, pretty and homely" females got his attention (from 1833-ish onward), the serial adultery of horny Joseph Smith conveniently 'morphed' into the 'divine' polygamy aspect of 'restored' 'celestial marriage'!
That JS, Mormonism's so-called "prophet of the Restoration", convinced himself that having sex with prostitutes, teenage girls and single and married women was okay in the eyes of Christianity's Lord God Almighty (a mental construct) speaks volumes about his huge ego and deluded thinking. Bear in mind that he'd been taught Bible-based Protestant values during his formative years.
Finally, if anyone is interested in purchasing a copy of Wyl's work, Abebooks.com lists two used copies. Also, Google Books lists his volume (apparently, it's searchable) at http://books.google.com/books/about/Mormon_Portraits_Or_the_Truth_about_the.html?id=1DtiSQAACAAJ&redir_esc=y.