Instructions:

1. Open Apple Mail.

2. Select "Mail" from the top menu bar, then select "Preferences."

3. Click the "Signatures" tab in your "Preferences" window. Select the signature to which you want to add an image or make a new signature by clicking the +.

4. Click the "Finder" icon in your Dock to open a new Finder window, then locate your desired email signature logo image in the Sterling folder in documents. Move the Finder window to a position where you can see your Mail Preferences. You can also access the logo image from my web site.

5. Drag the image and, still holding your mouse, move it to the email signature information window. Release your mouse when you see the green "+" sign to add the image to your signature.

6. Then apply the signature to the desired address(s).