How do I see what journal entries have been made during 2017 & 2018?

Do an Advanced Search for "Journal Entries" and "Add Filter" to create your "Date Filter" (From - To Dates)

Welcome to the Community, bobcpa!

You can consider @Regina_Lend_A_Hand_Accounting's answer. And I'd be glad to add another option that you may want to consider, too.

We can pull up and customize your Journal Entry to get a view of all those journal entries you've created for the past two years. Let me show you how.

    1. On the left panel, click Reports.
    2. On the search box, search for Journal.
    3. Under Report period, click the This Month-to-date drop-down and choose Custom.
    4. Change the date range from January 1, 2017 to December 31, 2018.
    5. Click anywhere on the page to update the report.

Feel free to see the screenshots below.

Please feel free to read this article for your reference: How to customize reports.

Don't hesitate to leave a comment below if you have any other questions. Have a blissful day!

I believe the Journal report includes all transaction types. Though a great suggestion. It may need to be filtered by transaction type.