To add to what Tony said,  the PRR added new groups as soon as they knew they were coming.  In place of a specific number they entered "NEW" in that column.   If you check you will see numerous groups of cars showing 1, 2 or 3 remaining. The effort to be accurate was made.  Keep in mind that the PRR dated their submission 90 days before the issue date because of the enormous size of the fleet and the accounting necessary to provide accurate data.

Rich Orr

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