If you are a vintage seller and/or collector one of the best sources for dating vintage is to do plenty of research by reading magazines! Seeing the editorials and advertisements really helps to pinpoint specific styles of clothes.
I never really realized how much I loved the styles of the early 1970s until I viewed all these images. Long drapey dresses, 1930s silhouette inspirations, 1920s cloche hats, swingy skirts, and belted cardigans and sweaters. I'm totally loving it!