# Link ASEC before 1989

**URL:** <https://forum.ipums.org/t/link-asec-before-1989/1547>\
**Category:** CPS\
**Created:** [January 20, 2017, 5:53pm UTC](https://forum.ipums.org/t/link-asec-before-1989/1547 "2017-01-20T17:53:00Z")\
**Posts on this page:** 1\
**Showing post:** 1

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**Author:** ![lionup](https://avatars.discourse-cdn.com/v4/letter/l/da6949/32.png) [@lionup](https://forum.ipums.org/u/lionup)\
**Post date:** [January 20, 2017, 5:53pm UTC](https://forum.ipums.org/t/link-asec-before-1989/1547/1 "2017-01-20T17:53:00Z")

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How can I link individuals across ASEC samples before 1989? CPSIDP and HRHHID only starts from 1989. Thanks.

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