It profiles Henderson Luelling (1809–1878) and it’s not exactly an academic source. Here’s a snippet:

Luelling had taken up with these groovy Free Lovers, whom he met in San Francisco. From the outset, the journey had complications. “Dr.” Tyler, it turned out, was actually an ex-blacksmith who now professed expertise in water-cures and clairvoyance. One of the men was fleeing financial troubles, and when the ship was searched by police he hid under the hoopskirt of a female passenger.

Luelling’s life follows many common themes of mid-nineteenth century Quaker life:

• He was a horticulturalist, first moving to the Portland, Oregon, area and then to a small town near Oakland, California. Friends had long been interested in botanical affairs. Roughly a century earlier John Bartram was considered one of the greatest botanists of his generation.
• Luelling moved from Indiana to Salem, Iowa in the 1830s and became a staunch abolitionist, even building hideouts for the Underground Railroad in his house. Wikipedia reports he was expelled from his meeting for this.
• He got Oregon fever and moved his operation out there.
• At some point in this he became interested in Spiritualism and its offshoots like the Free Love movement. This was not a Quaker movement but the modern American movement started with the Fox Sisters in Upstate New York and was heavily promoted by Quaker Hicksites Amy and Isaac Post.

If you want to know more about Luelling’s “sex cults,” this article in Offbeat Oregon feels much better sourced: The father of Oregon’s nursery industry and his “Free Love” cult:

The “free love” thing is far from new. Over the years, especially in the American West, at least half a dozen generations have produced at least one “daring” philosopher who calls for a throwing-off of the age-old yoke of marriage and family and urges his or her followers to revert to the mythic “noble savage” life of naked and unashamed people gathering freely and openly, men and women, living and eating and sleeping together with no rules, no judgment and no squabbles over paternity.

He’d also started his very own free-love cult — “The Harmonial Brotherhood.” Luelling’s group made free love the centerpiece of a strict regimen of self-denial that included an all-vegetarian, stimulant-free diet, cold-water “hydropathy” for any medical need, and a Utopian all-property-in-common social structure.

Portland Friend Mitchel Santine Gould has written about some of these currents as well. His LeavesofGrass.org site used to have a ton of source material. Digging into one day it seemed pretty clear that the Free Love movement was also a refuge of sorts for those who didn’t fit strict nineteenth-century heterosexuality or gender norms. Gould’s piece, Walt Whitman’s Quaker Paradox has a bit of this, with talk of “lifelong bachelors.”

Many of the Spiritualist leaders were young women and their public lecture series were pretty much the only public lectures by young women anywhere in America. If you want to learn more about these developments I recommend Ann Braud’s Radical Spirits: Spiritualism and Women’s Rights in Nineteenth-Century America. These communities were very involved in abolitionist and women’s rights issues and often started their own yearly meetings after becoming too radical for the Hicksites.

And lest we think all this was a West Coast phenomenon, my little unprepossessing South Jersey town of Hammonton was briefly a center of Free Love Spiritualism (almost completely scrubbed from our history books) and the nearby town of Egg Harbor City had extensive water sanitariums of the kind described in these articles.

The family found a community of Quaker friends in the small town, of which Stoneman Douglas wrote, “It may have been a ‘frontier town,’ but there was strict tradition to guide him, the tradition of ‘Yea and nay,’ the tradition of plain living and clear and independent thinking, and there were family stories to point up the stiff-backed breed. They may have been plain people but they were colorful.”
— Read on m.startribune.com/namesake-at-school-of-latest-massacre-was-a-minnesota-native-born-in-1890/475206053/

 From Religion in the News, an interesting study on what “spiritual but not religious” parents (the “nones”) are looking for:

Many of [the nones] are nonetheless reluctant to impose their skepticism on their children, and will often outsource religious education by sending their children to a Protestant Sunday school or Catholic CCD or Jewish Hebrew School. But while, like other Americans, Nones “agree that everybody should be able to choose,” Manning said, “Nones won’t allow children to choose just anything.”