I need an excel database created from multiple tabs of information

I have a number of large spreadsheets. Each contain multiple tabs. The tabs contain contact information (some upto 25 columns worth). The task would be to create two spreadsheets with two tabs that contain the information. You would move information from each tab into a master tab. You would also need to "tag" the data in each tab (e.g. create a column with the tab name) so in the master version I will know where it came from.

**Please note that only proposals that answer the questions below will be reviewed.**