# Humans to Mars: Fifty Years of Mission Planning, 1950-2000

> White House document

**Wikidata**: [Q106658042](https://www.wikidata.org/wiki/Q106658042)  
**Source**: https://4ort.xyz/entity/humans-to-mars-fifty-years-of-mission-planning-1950-2000


## References

1. [Source](https://www.lpi.usra.edu/lunar/strategies/)