From Fedora Project Wiki
These are presented roughly in the order a user would see them during a fresh install using an F11 live media image.
Syslinux & GRUB
Syslinux Hi-Color
(Note: this is now converted to 16-bit and is usable in syslinux)
PATH: /usr/lib/anaconda-runtime/syslinux-vesa-splash.jpg
Resources
Unbranded PNG (still not converted yet)
Syslinux Indexed Color
GRUB
Anaconda
SVG Source (for both header and splash)
Anaconda Header
Anaconda Splash
Firstboot
Firstboot Banner
Media:Artwork-F11-firstboot_banner-nologo.png