Mrs. L. Darling of Middlesex, N.Y. wrote this card in August 1909. The message reads:
Dear Miss Sprague
I heard you had not been well & hope this will find you fully recovered my health is quite good. Mr Darling is not as well & am worried about him & hope he will soon be better I read of your Fathers Death I sympathize with you in your affliction. have you had your vacation, come + see us. Do you want to take the magazine again for Dora remember us to Dora + Grace I would like to see you all Write Soon. Sincerely your friend Mrs. L. Darling.
The casual mention of the father's death strikes me as odd, but I've seen it on other postcards of the era.
Here's the front of the card.