These "Everyday Fashions" books are great. You not only get an idea of the types of clothing people wore during any particular decade, but in a few cases, you even get some pricing (too bad it's not all the time, but I digress).
The reason I've been getting these books is different from others who have posted here. I don't try to get ideas to sew clothes either on a personal or professional basis (like for a play or something). The reason is that I'm a writer, and I like to see what my characters should be or might be wearing for any particular decade, as I tend to write stories set in the 1920s, 1930s, 1940s. What's nice is that the books do a year-by-year thing, so in this instance, you can see what a woman wore in 1919 as opposed to 1925 - and what a difference in women's clothing in just 6 years!
Yes, they're in black and white, but I remember a reviewer for one of these books stating that the Sears catalogs were typically in black and white anyway. Besides, I can just as easily imagine different colors for different outfits (and a lot of times, they will tell you what colors are available, as part of the ad).
The preface/forward for the 1920s (also includes 1919) is split among pre-flapper, flapper, and nudges into the Depression (1930). Utterly fascinating. And I felt there was a enough of men's clothing included here, too, though this was a fairly conservative era for men's fashions, so IMHO the suits, hats, and coats, etc., would necessarily look pretty similar.