To rebuild the zip on a computer:
  cat "Mary Baker.zip.part01" "Mary Baker.zip.part02" "Mary Baker.zip.part03" > "Mary Baker.zip"
On Windows PowerShell:
  Get-Content Mary Baker.zip.part01,Mary Baker.zip.part02,Mary Baker.zip.part03 -Encoding Byte -ReadCount 0 | Set-Content "Mary Baker.zip" -Encoding Byte