gs \
  -o DelMarReport.pdf \
  -sDEVICE=pdfwrite \
  -dPDFSETTINGS=/prepress \
   Report.pdf \
   AppendixA.pdf \
     EnvConditions.pdf \
   AppendixB.pdf \
   AppendixC.pdf \
    DelMarStaticResults.pdf \
   AppendixD.pdf \
    DelMarDynamicTensionResults.pdf \
    DelMarDynamicMotionResults.pdf \
   AppendixE.pdf \
    DelMar_hamilton_v2.cab.pdf