Try proofhouse.com tables
Marlin model 70.
Proofhouse.com has a store brand reference chart.
50-100 USD or so
Cannot find reference to a Model cc 550. Perhaps 650, which would be a Marlin Model 55.
according to the cross reference sheet I found it is the same as the westernfield 04-m 390a model
50-100 or so
20-100
Made for Pioneer Stores by J. Stevens, it is likely a .22 LR.
The Ranger model 103-8 cross references to be a marlin model 100. You can get parts for the rifle at gunpartscorp.com. Their website will have a cross reference chart and everything you need. You will have to cross to the Sears 103-8, because they were made under contract.
$100
Made by J Stevens Arms Company