Anomalous, thanks for your response. Adding a line "print Dumper $sheet;" generates error: 
print() on unopened filehandle Dumper at ./minitest.pl line 33.

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References like: 
my $sheet_count = $book->[0]{sheets};

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before the loop work, but even though I have: 
$sheet = $book->[$sheet_index] or next;

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this does not seem to be doing the trick. I have tried many variations with no success. I had know autovivification as Perl magic. Knowing the proper term allows me to read about the full effects of the feature. Thanks for that. Adding: 
use warnings;
use strict;

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up top makes no difference in the result. Thanks, Hammer.

In reply to Re^7: Iterating Through Cell Blocks with Spreadsheet::Read by Hammer2001
in thread Iterating Through Cell Blocks with Spreadsheet::Read by Hammer2001

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