# Claude Marthaler

> Swiss cyclist explorer and writer

**Wikidata**: [Q2977774](https://www.wikidata.org/wiki/Q2977774)  
**Source**: https://4ort.xyz/entity/claude-marthaler


## References

1. BnF authorities
2. Virtual International Authority File
3. [BnF authorities](https://catalogue.bnf.fr/ark:/12148/cb145788067)
4. [BnF authorities](http://data.bnf.fr/ark:/12148/cb145788067)