Correct the following sentences:

1) "us american are certainly indeted to gutzon borglum the sculptor," said grandma jones.

2) her added, "yes mount rushmore would be less interesting without his carvings."

3) borglum beggined carving president washington president jefferson president t roosevelt and president lincoln in the summer of 1924.

4) then i asked, "didn't he camly work from a chair suspended from the top of the cliff"?

5) my daughter jess said, "certainly borglum's style is strong not subtle, each face on mt. rushmore is sixty feet high"!

6) borglums projecttook fourteen years and it were finished by their son on october 31, 1941