Excel Spreadsheet Merging

I need four A-Z screenshot spreadsheets converted into Excel and a master spreadsheet created, merging all data alphabetically.

Requirements:
- Convert four A-Z screenshot spreadsheets into Excel format.
- Create a master spreadsheet combining all data into one single sheet from an origianl spread sheet, so merge everything into one sheet.
- Maintain original data integrity; no deduplication needed.

Ideal Skills:
- Proficiency in Excel
- Experience with data merging and spreadsheet creation
- Attention to detail