Donald Mowrer was a man of times - clinically a true behaviorist in the 1960's and 70's. He was also a Renaissance Man when it came to technology, using what was available and adapted it clinically. He developed programs to include parents in the therapeutic process, he developed a cassette training program for clinicians and students, and he was among the first to develop online support opportunities for professionals and people who stutter and their teachers and parents with his listserv - stutt-x. I only wish the ASU had maintained the archives of the discussion on that mailing list (an others) so it could be read. Such is the way of a lot of online information and computer generated material that can no longer be accessed.

Mowrer, Donald E. The Relative Frequency of Misarticulations of [unvoiced Th Symbol] and [voiced Th Symbol] in the Initial, Medial, and Final Positions Produced by Children in Grades One, Two, and Three, published by Florida State University, 64 pages. (1953)

MOWRER, D. E., An experimental analysis of variables controlling lisping responses of children. Doctoral dissertation, Arizona State Univ. (1964).

MOWRER, D. E., BAKER, R. L., and SCHUTZ R. E., Modification of the Frontal Lisp Programmed Articulation Control Kit. Tempe, Arizona: Educ. Psychol. Res. Assoc. (1968).

MOWRER, D. E., and BAKER, R. L., Management of consequent events in speech therapy. Paper presented at the Annual Convention, American Speech and Hearing Assn., Denver (November 1968).

MOWRER, D. E., BAKER, R. L., and OWEN, C., Verbal content analysis of speech therapy sessions. Paper presented at the Annual Convention, American Speech and Hearing Assn., Denver (November, 1968).

MOWRER, D. E., and RYAN, B., Visual discrimination of the phoneme /a~/. University Grants-In-Aid Project, Ariz. State Univ. (1968).

MOWRER, D.E. Evaluating Speech Therapy Through Precision Recording, Journal of Speech and Hearing Disorders Forum 1 Aug 1969

MOWRER, D.E. Transfer of Training in Articulation Therapy. Journal of Speech and Hearing Disorders, Forum - Volume 36 Issue 4 November 1971 Pages: 427-446.
This article cited Mowrer, Baker, and Schutz (1968) - "devised an instructional training manual for parents of lisping children. The parent was to administer the program immediately after the child received three instructional sessions at school. Written instructions in the training manual explained exactly what the parent was to do, say, and evaluate while administering the 15 lessons in the program. When the parents followed the instructions explicitly, 70% of the children articulated /s/ correctly during the first 20 /s/ responses in a test of conversational speech.
For example, one important variable identified by Mowrer, Baker, and Schutz (1968) which appeared responsible for increasing correct /s/ production in spontaneous speech was the token reward provided to the child following each correct /s/. Children whose parents did not provide such token reward produced significantly fewer correct /s/ responses on the criterion test than did children who received tokens". p. 439

Mowrer, D. E., Measurement in speech therapy. Psychol. Aspects Disabil., 17, 24-28 (1970).

Mowrer, D.E. The Management of Consequent Events in Speech Therapy 1971 (cited in above resource)

Mowrer, D, An Instructional Program to Increase Fluent Speech of Stutterers, JFD 1(2), 1974, 25-35

Mowrer, D.E., Thompson, J.A., A Review of Articles Concerning Stuttering Appearing in 160 Periodicals during the Past Eleven Years, ASHA 19(12), 1977, 883-886

Mowrer, D.E., Effects of Audience Reaction upon Fluency Rates of Six Stutterers, JFD 3(3), 1978, 193-204

Mowrer, D., Speech Problems: What You Should Do and Shouldn't Do, Learning 6(5), 1978, 34-37

Mowrer, D. and Julia Thompson, Middle-class Adult's Knowledge of Referral Sources for Problems of Vision, Reading, Stuttering, and Articulation, JFD 3(4), 1978, 285-294

Mowrer, D.E., Fairbanks, C., Cantor, A.B., How School-aged Students Define Stuttering and Stammering, JFD 5(4), 1980, 331-344

Mowrer, D. (1987). Reported use of a Japanese accent to promote fluency. Journal of Fluency Disorders, 1, 19-39.

Mowrer, Donald E., and Mary Elizabeth D/Zamko. “A Comparison of Humor and Directive Language in Head Start Classrooms.” HUMOR: International Journal of Humor Research 3.3 (1990): 297-304.

Mowrer, D.E., & Burger, S. (1991). A comparative analysis of phonological acquisition of consonants in the speech of 2;5 - 6 - year - old Xhosa- and English- speaking children. Clinical Linguistics and Phonetics, 5(2), 139-164.

Mowrer, Donald E. “A Case Study of Perceptual and Acoustic Features of an Infant’s First Laugh Utterances.” HUMOR: International Journal of Humor Research. 7.2 (1994): 139-155.

Mowrer, D. Alternative Research Strategies for the Investigation of Stuttering. Journal of Fluency Disorders, (1998) 23, 89-97.

Mowrer, D. (1998). Analysis of the Sudden Onset and Disappearance of Disfluencies in the Speech of a 2 1/2-year-old boy. Journal of Fluency Disorders, 23, 103-118.

Donald E. Mowrer, Exercises in Modifying Speech Behaviors C E Merrill Pub. Co; Second edition (1977)

Donald E. Mowrer, Methods of modifying speech behaviors: Learning theory in speech pathology, Merrill; 2nd edition (1982)

Donald E. Mowrer Clinical Management of Speech Disorders, Aspen Pub (January 1, 1982)

Mowrer, Donald, Modification of the Frontal Lisp Programmed Articulation Control Kit Paperback, 1970 - listed on Amazon as - 3 paperback instructional books - Speech Book, Parent Manual, and an instructional manual for the speech pathologist (not visible on the Amazon site which says the entire item is "currently unavailable - we don't know when or it this item will be back in stock."

Editorial review is provided- "This instructional program was designed to correct the frontal lisp, aimed at two learning concepts: successive approximation and differential reinforcement. Dr Mowrer therefore, developed this program to be administered by a speech pathologist, with tools for the parent. There is the large instructional manual for the speech pathologist, which after completion, explains the use of the Parent Manual and Speech Book. The object of the program is to quickly and efficiently aid the lisping student to overcome his speech error."

I believe the 1970 kit was based on the ??? article which explains the program. As a new speech clinician in 1968 in the public schools in Lake Mills, Wisconsin, I worked to develop the program, based on the article but I did not finish it since I was hired as a clinical supervisor at UW-Madison the summer of 1968

This article encouraged me to search online following a desperate email from the wife whose husband had multiple diagnoses with a mixture of drugs attempting to treat him. She was convinced that the drugs had caused stuttering. His doctor was convinced it was psychological due to his mental health diagnosis. She gave me a list of the drugs and none had a side affect of stuttering. Then I started combining the various drugs and found two articles on med-line that implicated a combination of three of them as producing stuttering in their patients. She brought the articles to her husband's doctor who found a different combination to treat his health and mental status and the stuttering disappeared.