Vintage photos show how the role of women in the workforce has evolved in the last 100 years

• During the early 20th century, women's employment was affected by war and advancements in tech.
• In the 1960s and 1970s, women were able to expand their horizons and career opportunities. 
• Vintage photos from the past 100 years show how their roles have changed.

Working women have come a long way in the last 100 years. 

In the 1920s, women entered the workforce in astonishing numbers as a result of the industrial revolution. 

Then, as men were sent off to war, more women got involved in the wartime effort in factories and other professions previously dominated by men.