26 Uppercase (6 in.) and 26 Lowercase (4 in.) letters saved as semi-individual png files on white background (A and a are on one file together.). There is also a PDF file included for ease of printing.
For an example of product, check out the Navaho Alpha Freebie: http://www.teacherspayteachers.com/Product/Navaho-Theme-Printable-Alphabet-1161672
Instructions for inserting individual letters into a powerpoint file:
1.) Select letter combo (ex. Aa) you want to insert.
2.) On Format Toolbar, crop to individual letter and resize to fit your needs.
To remove white background:
1.) On Format Toolbar, go to remove background.
2.) Re-crop as necessary to fit as close to letter as possible.
3.) The shaded pink part will be removed to make sure all the white background is shaded pink and not on the letter. NOTE: it usually does this automatically but it's always safe to check.