Noteworthy women playwrights writing in the same era as Treadwell are:  Through the use of various 'isms' these playwrights explored new and alternative ways of presenting women's lives in their plays. Treadwell remained widely unknown and un-talked about in the world of theatre scholarship until select feminist scholars resuscitated interest in her works following revivals of "Machinal" in 1990 by the New York Shakespeare Festival and in 1993 by the Royal National Theatre in London. The majority of Treadwell's works are stored at the University of Arizona Library Special Collections and the rest at The Billy Rose Theatre Collection at the New York Public Library. The rights to Treadwell's works were passed on in her will to the Roman Catholic Diocese of Tucson: A Corporation Sole. One who wishes to obtain the rights to Treadwell's plays can address an enquiry to: Fiscal and Administrative Services, Diocese of Tucson, PO Box 31, Tucson, AZ 85702. Proceeds earned from the production or printing of Treadwell's works are used to benefit Native American children in Arizona. Further biographical information and critical analysis about Treadwell may be found in: All of Treadwell's plays are published electronically in "North American Women's Drama" through the academic database publisher Alexander Street Press. Access to this resource is available by purchase directly through ASP's website, or through library access at many academic institutions that have purchased a license to the database. In addition, "Machinal" is (or was) included in the following anthologies: