Very Hidden Excel Worksheets
Don't miss that Excel includes a feature which you can use to make worksheets very hard to find. In Visual Basic, if you go to View . . . Properties Window you will bring up options for each of the worksheets shown in the project list to the left. There is a drop down menu for the Visible field. If the very hidden option is selected . . .
. . . not only will the worksheet not be displayed with the rest of the 'tabs', but it will not be included in the list of worksheets to unhide, when you right click on a worksheet and select 'Unhide'.