![Income Tax Bill Ratified](/sites/default/files/income_tax_bill_ratified_thumbnail_0.jpg)
![Income Tax Bill Ratified](/sites/default/files/income_tax_bill_ratified_0.jpg)
Clue
Is there more than one date?
![Gathering Facts for the Income Tax](/sites/default/files/Gathering_facts_for_income_tax_thumbnail.jpg)
![Gathering Facts for the Income Tax](/sites/default/files/Gathering_facts_for_income_tax.jpg)
![16th Amendment](/sites/default/files/16th_Amendment_thumbnail.jpg)
![16th Amendment](/sites/default/files/16th_Amendment.jpg)
Clue
Is there a date on this source?
![First Vote](/sites/default/files/First_vote_thumbnail.png)
![First Vote](/sites/default/files/First_vote.jpg)
Clue
What do you notice first?
![Significant Election Scene](/sites/default/files/Significant_election_scene_thumbnail.jpg)
![Significant Election Scene](/sites/default/files/Significant_election_scene.jpg)
Clue
What kind of image is this?
!["Protect the Freedman"](/sites/default/files/Protect_the_Freedmen_thumbnail.jpg)
Listen:
!["Protect the Freedman"](/sites/default/files/protect_the_freemen_3.jpeg)
Clue
Is there a title?
15th Amendment
16th Amendment
![](/sites/default/files/Significant_election_scene_thumbnail.jpg)
1867
Significant Election Scene
![](/sites/default/files/First_vote_thumbnail.png)
1867
First Vote
![](/sites/default/files/Protect_the_Freedmen_thumbnail.jpg)
1866
"Protect the Freedman"
15th Amendment
![](/sites/default/files/16th_Amendment_thumbnail.jpg)
1913
16th Amendment
![](/sites/default/files/income_tax_bill_ratified_thumbnail_0.jpg)
1913
Income Tax Bill Ratified
![](/sites/default/files/Gathering_facts_for_income_tax_thumbnail.jpg)
1921
Gathering Facts for the Income Tax
16th Amendment