It looks like a Selectric to me, too. I worked for several years in the early 1980s in a university office equipped with Selectrics. Nothing in the examples sho

It looks like a Selectric to me, too. I worked for several years in the early 1980s in a university office equipped with Selectrics. Nothing in the examples shown looks as though it couldn’t have been done with a Selectric and some careful planning and execution. When typing documents like the ones shown, the typist would count characters and plan the centering and alignment of columns in advance. I can remember marking up manuscripts with pencil before starting to type on a clean piece of paper. If you made mistakes that couldn't be corrected with whiteout or correction tape, you typed the page again. I took some mathematics classes from Paul Halmos at UC Santa Barbara in the late 1970s. He and his wife invited a group of students to their home for dinner, and his secretary joined us as well. I remember her saying that she enjoyed the challenge of typing mathematical manuscripts even though she didn’t understand the math.