dwarf scrolls

i recently got access to the dwarf and spoke to them but I only have 1 scroll and I need 4 how do I get the other 3?

I've found the first one, but I haven't been able to find the others. I got all the way to the bottom, I have the Community Center completed, the bus is unlocked. I'm working on Willy's boat right now. For some reason, I'm having a difficult time with finding the scrolls this playthrough. (I'm...