'Lost' Calendars in OSX 10.4.6

My iCal calendars, lost in a crash following a recent software adjustment must be somewhere on my computer, or in the home folder backed up on a separate h/drive, or on my 'other' Powerbook, but all folders marked 'Calendar' are empty, and copying files marked iCal from preferences etc have no effect. This data (important to me) must be somewhere - how do I find it? Can Migration Assistant transfer just the relevant iCal files without other applications being affected? iCal has always been so stable through lots of OSX upgrades etc that backing up beyond my normal Home folder data backup didn't seem like an issue - until OSX 10.4.6!
James

The calendar files are in ~/Library/Application Support/iCal/Sources/, one folder for each calendar.
AK

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Forgot Your Account Password
For Lion, Mountain Lion, or Mavericks
    Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
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     instructions in the dialog window that will appear.
     Or see:
       Reset a Mac OS X 10.7 Lion Password
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For Snow Leopard and earlier with installer DVD
     Mac OS X 10.6- If you forget your administrator password,
     OS X- Changing or resetting an account password (Snow Leopard and earlier).
For Snow Leopard and earlier without installer DVD
    How to reset your Mac OS X password without an installer disc | MacYourself
    Reset OS X Password Without an OS X CD — Tech News and Analysis
    How To Create A New Administrator Account - Hack Mac

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You cannot see it because it is hidden.. one of those great things apple does.. if it is hidden in your Mac then it will be hidden in the Time Machine Backup.
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'Lost' Calendars in OSX 10.4.6

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