can i use to whom it may concern in a cover letter

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1. Letter Sample To Whom It May Concern

   

2. Free Printable 'To Whom It May Concern' Cover Letter Template [PDF & Word]

   

3. Free Printable 'To Whom It May Concern' Cover Letter Template [PDF & Word]

   

4. 50 To Whom It May Concern Letter & Email Templates ᐅ TemplateLab

   

5. Free Printable 'To Whom It May Concern' Cover Letter Template [PDF & Word]

   

6. 26+ Cover Letter To Whom It May Concern