JoelSteinbach:
Your Model 15-3 Combat Masterpiece was manufactured in 1971.
MacBean:
Your Model 34-1 .22/.32 Kit Gun falls in the serial range for 1969 to 1971, (M1 to M30000) with 1971 being most likely. The -1 in the model number refers to a change from the old .32 caliber size I frame (hence .22/.32, a .22 on a .32 frame) to the slightly larger .38 sized J frame.
Your .22 Outdoorsman / K22 First Model is a rare beast and highly collectable. It falls into the period between January 1931, when the model was introduced at serial number 632124, and 1933 (serial number 644xxx).
Your 32-20 Hand Ejector, if it has a locking lug under the barrel, is a Model of 1903 and was manufactured in 1903 or 1904. If it lacks the locking lug then it is a Model of 1896 and falls into the date range 1896 to 1901.
Your .38 Military & Police 1st Model / Model of 1899 Army & Navy Revolver was manufactured in 1901 or 1902.
For exact shipping dates you will need to invest $50 per gun to obtain a factory letter from S&W that will tell you where it was shipped to, on what date and in what configuration.