What is the test for admissible evidence in a personal injury case where a notebook containing information about an alleged abortion was found in a cupboard beside a telephone?

The same conclusion was reached in People v. Ramsey, 83 Cal.App.2d 707, 189 P.2d 802 (1948) in dealing with a similar situation. At defendant's home, where an alleged abortion occurred, a loose-leaf notebook was found in a cupboard beside a telephone where an appointment book would usually be kept. The notebook contained entries showing a date, time, name, address and telephone number which were consistent with the alleged abortion. The court ruled that the notebook was admissible, despite the fact that neither authorship nor when the entry was made was shown.