McCall 6794 is from this year's batch.
There is one page of somewhat terse instructions that include recommendations for a hand-worked buttonhole.(Because everyone knows how to sew). They don't mention suggested fabrics because everyone knows what pants are made of.
I love old patterns and cookbooks not just for the information they put in, but for what they leave out.
Old cookbooks assume we all know how to cook, so their recipes are "reminders" of how certain dishes are made. Similarly, vintage patterns sometimes don't mention fabric types, seam finishes, or other techniques, because they assume that all sewists will just know to do them.
A pants pattern from 1947 also tells us that women were wearing pants for casual occasions. I'm assuming this is "casual" because the background of the illustration is somewhat "countrified". Nowadays we'd wear jeans. Fun fact: designer jeans specifically for women were introduced in the 1960's by Andre Courreges (who also invented the miniskirt, along with Mary Quant.)
P.S. Wondering what the difference is between a Ladies' and Misses' sizes. The pattern does not elaborate. Everyone must have just "known" this as well.