Knight v. William Summerlin Co.

Eberhardt, Judge.

By his written acceptance of the letter Knight assumed an unconditional obligation to pay a definite sum of money at definite times. He may not engraft upon it a provision converting the unconditional contract to pay into a conditional obligation by pleading a contemporaneous oral agreement to that effect. Lee v. Garland, 208 Ga. 251 (66 SE2d 223); Johnson v. Cobb, 100 Ga. 139, 141 (28 SE 72); Mansfield v. Barber, 59 Ga. 851; Mason v. Blayton, 119 Ga. App. 203 (166 SE2d 601). Nor could the alleged contemporaneous oral agreement be proven. Bullard v. Brewer, 118 Ga. 918 (45 SE…