Historical Figures Dress up Day - vintage patterns?

[Hoolahoophop]

The kids have several dress up days coming up, for the Victorian school day, the historical figures day, the second world war workshop, Cavemen, Vikings, Greeks, Romans and Egyptians, (the more ancient ones were easy we just bought something off amazon or used a sheet as a toga!)

But for the 1900-now dress up days I fancy making something to practice my sewing skills, or adapt something we have.

Any ideas for where in the internet I might find a good source of vintage sewing patterns, preferably for free that i can download and have a go at.

Thanks.

Ebay and etsy but be aware that rhw sizes will probably be small compared with today.

Thanks @Geneticsbunny i will take a look, was hoping for a free library! But little in life is free 😀

I used existing clothes and then spent time making era appropriate accessories and made my own patterns. So for victorian day I used a party dress and I made a victorian apron with ruffles over the sleeves and a frilly bit around the edge to go over the dress to make it look victorian. And I think I bought a bonnet and then added some ribbon.