I have a Mac OS X 10.7 Lion recovery usb flash drive. It still boots but won't install Lion anymore (an error occurred during installation). I don't have a install DVD, however the MacBookPro's were able to install El Capitan directly.
I have a Lion install dmg so there are two options: to make a bootable DVD or simply execute the dmg burned into a DVD - trying right now.
I was trying to learn some command line tasks but there are some issues. The root is read only so I could not create a new directory and mount the DVD. Also, I remembered there is an app to easily create a bootable DVD.