2000 February 11, “Any females out there”, inalt.fashion.crossdressing[1] (Usenet):
You don't see flat T-girls.T-boys shouldn't have a v-shaped crotch.
2004, Lannie Rose,How to Change Your Sex: A Lighthearted Look at the Hardest Thing You'll Ever Do[2], Lulu.com,→ISBN,→OCLC, page45:
If you are at-boy (a transgender boy) with a vagina of your own, there are many possibilities for vaginal sex; I am sure you don't need me to enlighten you on that subject.
For the record, I've radared scores of t-girls (plus the oddt-boy) over the years.
2011, Red Jordan Arobateau,Days Before The Yoke[4], Lulu.com,→ISBN,→OCLC, pages133–134:
Exogenous hormones close the growth plates earlier; so the prospective new teenT-boy, or teen T-girl should not use hormones at that point and allow their body to mature properly, but use a hormone blocker
2017 May 22, Stephanie Chambers, Jane Farrow, Maureen Fitzgerald, Ed Jackson, John Lorinc, Tim McCaskell, Rebecca Sheffield, Tatum Taylor, Rahim Thawer,Any Other Way: How Toronto Got Queer[5], Coach House Books,→ISBN,→LCCN,→OCLC:
And if you happened to be a femmyT-boy, genderphobia ran rampant!