Pennsylvania Statutes Title 8 P.S. Bonds and Recognizances § 21. Notice in writing necessary to discharge sureties

The surety or sureties in any instrument in writing for the forbearance or payment of money at any future time, shall not be discharged from their liability upon the same, by reason of notice from the surety or sureties, to the creditor or creditors, to collect the amount thereof from the principal in said instruments, unless such notice shall be in writing and signed by the party giving the same.