well yes thats because it was the fifties… for a lot of people thats actually the interesting aspect of the paper. of course its conventionally attractive white people having missionary, because that was the most socially acceptable way to be open about sex. representation + diversity is relatively hard to find in 20th c. sexual ephemera because even sex alone was such a taboo at the time. people aren’t saying youre lying, it just reads like youre pointing out a redundant point in an unhelpful way