Conversation so far:
What type of work did Lillian do?
For more than forty years, Gilbreth's career combined psychology with the study of scientific management and engineering.
What other type of work did she do?
In addition to jointly running Gilbreth Incorporated, their business and engineering consulting firm, Lillian and Frank wrote numerous publications as sole authors.
What type of books did she write?
more than fifty papers on a variety of scientific topics.
Did she write anything else?
CANNOTANSWER.
Did she have any other career highlights?
she became the first American engineer ever to create a synthesis of psychology and scientific management.
Why did they write as sole authors?
CANNOTANSWER.
Is there anything else interesting?
Althhough her credentials included a doctorate in psychology, she is less frequently credited in their joing publications than her husband, who did not attend college.

Question: What other things did the Gilbreths do?
Self-contained rewrite: Besides joint publications, what other things did the Frank and Lillian Moller Gilbreth do?