Hertsmere Borough Council is looking for people to share their memories as they celebrate the authority's 40th anniversary.
The borough was created four decades ago - on April 1, 1974, with a merger of Bushey Urban District, Potters Bar Urban District, Elstree Rural District and the parish of Aldenham.
Hertsmere council leader Councillor Morris Bright said: "Our 40th anniversary year provides an excellent opportunity not just for a bit of fun and nostalgia but also to reflect on what has been achieved across Hertsmere during that time.
"The changes in culture, lifestyle and technology have certainly been quite breathtaking and residents who have lived in Hertsmere since 1974 will have seen a huge transition in the ensuing 40 years."
To mark the anniversary, the council would like see any old pictures of the borough from the past 40 years.
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