Joins in Crystal Reports

I am having trouble getting the data I need.

I have two tables.

1.  Item Location table that has every item that is in a warehouse, both active and inactive items.

2.  History table that contains all Issues of items, Transfers and Receipts ect...

I want to see ALL items from the Location table and if the item is in the History table I want to see that data. I just can not get the JOINS to work.

I appreciate any help.

Frustrated