six o'clock
It was written on fashionable note paper . At the top of the paper was a monogram formed of the letters H and M . Here is the letter : `` MY DEAR MR. GRANT : I shall be glad to have you take dinner with me at seven o'clock . I should have given you earlier notice , but supposed you would not be back from the store till six o'clock . You will meet my son Roy , who is a year or two younger than yourself , and my brother , John Crawford . Both will be glad to see you . Yours sincerely , `` HENRIETTA MASON . ''