https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/2742200!["Keep it under your hat!" (1940s) poster in high resolution by St. Michael's Press Ltd. Original from The Museum of New…](https://images.rawpixel.com/image_social_portrait/czNmcy1wcml2YXRlL3Jhd3BpeGVsX2ltYWdlcy93ZWJzaXRlX2NvbnRlbnQvbHIvcGRtaXNjMS0wMS1uYXBfMi5qcGc.jpg)
!["Keep it under your hat!" (1940s) poster in high resolution by St. Michael's Press Ltd. Original from The Museum of New…](https://images.rawpixel.com/image_social_portrait/czNmcy1wcml2YXRlL3Jhd3BpeGVsX2ltYWdlcy93ZWJzaXRlX2NvbnRlbnQvbHIvcGRtaXNjMS0wMS1uYXBfMi5qcGc.jpg)
"Keep it under your hat!" (1940s) poster in high resolution by St. Michael's Press Ltd. Original from The Museum of New Zealand Te Papa Tongarewa. Digitally enhanced by rawpixel.
"Keep it under your hat!" (1940s) poster in high resolution by St. Michael's Press Ltd. Original from The Museum of New Zealand Te Papa Tongarewa. Digitally enhanced by rawpixel.
Public DomainFree CC0 image for Personal and Business use