Royalty-Free Reference Photos, sorted by aesthetic score

6000x4000

shallow-focus photography of papers

Public Domain
7500x2941

solution problem advertisement photo

Public Domain
4961x3508

close-up photo of white snowflake

Public Domain
4909x3604

five assorted-title books

Public Domain
2672x1619

brown walkway on green mountain

Public Domain
4951x3508

clear glass snowflake

Public Domain
4951x3508

snowflake

Public Domain
5472x3648

Dictionary book page photo

Public Domain
6000x4000

eyeglasses on book page

Public Domain
2200x1466

macro photo of snow flake

Public Domain
2400x1600

brown reference books close up shot

Public Domain
3264x2448

white Bible page

Public Domain
2842x1794

white and beige concrete building surrounded trees during daytime

Public Domain
4928x3264

books on brown wooden shelves

Public Domain
1920x1271

man sitting inside a library

Public Domain
4928x3264

post-it note, post-it, reminder, message, bulletin, communication

Public Domain
5357x3245

assorted-title books

Public Domain
4928x3264

assorted-title books display on shelf

Public Domain
1920x1271

opened book

Public Domain
4912x3264

yellow, green, background, texture, structure, leather

Public Domain
4912x3264

red leather textile

Public Domain
4912x3264

brown leather textile

Public Domain
5472x3648

gold-colored framed eyeglasses on top of book

Public Domain