When I was young I used to love these magazines from second-tier publishers or for professional specialties because the covers were always fascinating to stare at. Then I'd open them up and the contents were usually bollocks to a little kid who could barely read. Still ended up setting me on my life's path, though.
There are a couple ways to have done it. How I would have done it is to pencil in the drawing on a board, and trace the red and black squared-off lines on two different acetates (one for black, one for red) using precision-width ruling tape, and draw outlines of the remainder with a ruling pen https://en.wikipedia.org/wiki... and fill them with a brush and ink.
This way there was no original artwork as such, it only existed as a sketch and a couple sheets of plastic with black ink and tape on them. It's how we would have been taught to do it when I was in design school, pre-desktop publishing era.
Now after saying that I've zoomed in on the pic, and it's pretty clearly all drawn by hand and ruler, no tape, on a single board and the printer made their own separations. Which sounds wild to me (way more expensive this way) because the back-cover ad is black-and-white. But who knows what was going on at the time.
There are a couple ways to have done it. How I would have done it is to pencil in the drawing on a board, and trace the red and black squared-off lines on two different acetates (one for black, one for red) using precision-width ruling tape, and draw outlines of the remainder with a ruling pen https://en.wikipedia.org/wiki... and fill them with a brush and ink.
This way there was no original artwork as such, it only existed as a sketch and a couple sheets of plastic with black ink and tape on them. It's how we would have been taught to do it when I was in design school, pre-desktop publishing era.
Now after saying that I've zoomed in on the pic, and it's pretty clearly all drawn by hand and ruler, no tape, on a single board and the printer made their own separations. Which sounds wild to me (way more expensive this way) because the back-cover ad is black-and-white. But who knows what was going on at the time.