Two-hundred and seventy house journals considered research, development, or production aids to the engineer or scientist and published in the US, UK, and France are analyzed. Publication frequencies are given with quarterly being most common. Distribution patterns to customers, employees, educators, and librarians are described. These patterns vary, but customers receive the highest distribution. Journal content is examined in terms of signed and anonymous articles. Features such as abstracts, meeting notices, editorials, and advertisements are mentioned. Two features of particular interest are (1) comprehensive lists of articles and speeches of technical staff, and (2) reprinting of material already published in professional journals. The subject matter of individual journals is usually highly specialized.