The best OMB log with opening lines of all available episodes is here
460702 An Amerian Tragedy s/b 550403
48-05-08 Mother's Day should be 49-05-08
48-09-19 Weekend at Crystal Lake was 55-04-03 American Tragedy
48-09-19 correct 1st lines: Our Miss Brooks is an English teacher at Madison High School. She can tell you everything you need to know about the present and past subjunctive, but she's not at all sure about the future.
55-04-03 correct 1st lines: Our Miss Brooks who teaches English at Madison High School has been going with Philip Boynton for quite some time now. Six years to be exact.
48-12-19 The Magic Christmas Tree does not exist. It will be an edited copy of either 1949 or 1950 or 1955
49-02-27 Stretch Has A Problem was actually 540214 Basketball Trip or 570224 (Jeff Chandler is not in the episode and the announcer is Johnny Jacobs) Also the end ads are for Amos n Andy Music Hall which aired starting in 1954 and a PSA for Operation Skywatch which started in 1951.
490227 correct 1st line - Our Miss Brooks who teaches English at Madison High School, was as grateful as any other teacher, for the Washington's birthday holiday observed last week.
49-05-15 Friday the 13th aka Yearbook Photo Mixup was actually 50-01-15 Friday the 13th aka Cure That Habit..
49-05-15 correct 1st line - To many people, Friday the 13th brings a feeling of impending misfortune
490814 The English Test was 510527 The English Test
490814 correct 1st line - Although there aren't many too tests during the summer school session, Our Miss Brooks, who teaches English at Madison High summer school had to prepare a final exam last week.
49-12-04 Weighing Machine was 48-12-05. The 1948 episode begins "Palmolive Soap, your beauty hope, and Lustre-Creme Shampoo..."