I have a workbook that has 41 sheets and a summary sheet. I have information
in cells that I want to collect the data. the formula that I have is:

=CONCATENATE(Sheet1!C6,", ",Sheet2!C6,", ",Sheet3!C6,", ",Sheet4!C6,",
",Sheet5!C6,", ",Sheet7!C6,", ",Sheet8!C6,", ",Sheet9!C6,", ",Sheet11!C6,",
",Sheet12!C6,", ",Sheet13!C6,", ",Sheet14!C6)

I can not add any more sheets. What am I doing wrong or is there an easier
way to collect this information. Every sheet is the same format just
different text.
Thank you,