macOS App Store Links

10.15 Catalina: https://itunes.apple.com/us/app/macos-catalina/id1466841314?ls=1&mt=12

10.14 Mojave: https://itunes.apple.com/us/app/macos-mojave/id1398502828?mt=12

10.13 High Sierra: https://itunes.apple.com/us/app/macos-high-sierra/id1246284741?mt=12

10.12 Sierra: https://itunes.apple.com/us/app/macos-sierra/id1127487414?mt=12 Or: http://updates-http.cdn-apple.com/2019/cert/061-39476-20191023-48f365f4-0015-4c41-9f44-39d3d2aca067/InstallOS.dmg

10.11 El Capitan: https://itunes.apple.com/us/app/os-x-el-capitan/id1147835434?mt=12 Or: http://updates-http.cdn-apple.com/2019/cert/061-41424-20191024-218af9ec-cf50-4516-9011-228c78eda3d2/InstallMacOSX.dmg

10.10 Yosemite: Missing from App Store Or: http://updates-http.cdn-apple.com/2019/cert/061-41343-20191023-02465f92-3ab5-4c92-bfe2-b725447a070d/InstallMacOSX.dmg

10.9 Mavericks: Missing from App Store

10.8 Mountain Lion: Buy a redemption code- https://www.apple.com/shop/product/D6377Z/A/os-x-mountain-lion

10.7 Lion: Buy a redemtion code- https://www.apple.com/shop/product/D6106Z/A/os-x-lion

10.6 Snow Leopard: Buy the physical disc- https://www.apple.com/shop/product/MC573Z/A/mac-os-x-106-snow-leopard?afid=p231%7Ccamref%3A1101lmYI&cid=AOS-US-AFF-PHG

Apple KB Reference - How to get old versions of macOS: https://support.apple.com/en-us/HT211683