If you are a student, check if your university library or professor has provided access to the official solutions via a secure portal like Canvas or Blackboard.
Platforms like GitHub often host "Student Solution Manuals" where physics enthusiasts have typeset their own solutions in LaTeX. Searching GitHub for "Fetter Walecka Solutions" is often more productive and safer than downloading a random .zip file. If you are a student, check if your
Organized folders containing scanned or typeset answers for each problem set. If you are a student