The course can be found at: https://courses.edx.org/courses/course-v1:UBCx+HtC1x+2T2017/info
This is all the problem bank files seperated into organized directories. All in one clone/download.
If I missed anythig send a pull request or an issue.
fs-v4.rkt can be found in the "Mutuals/Mutual-Ref L1" directory.
It was listed there as well as in "Locals/Local L1" in the problem bank.