This dataset comes from an investigation into a large heroin trafficking organization in New York City in the 1990s. 1-mode matrix 38x38 person by person. Directed binary relations are communications exchanges / flows of information. Data come from police wiretappings (transcripts of 151 telephone conversations).

covert_21

igraph object

## Source

Available from Manchester (https://sites.google.com/site/ucinetsoftware/datasets/covert-networks). Reconstructed from Natarajan, M. (2006). Understanding the Structure of a Large Heroin Distribution Network: A Quantitative Analysis of Qualitative Data. Quantitative Journal of Criminology, 22(2), 171-192.

## References

Available from Manchester (https://sites.google.com/site/ucinetsoftware/datasets/covert-networks). Reconstructed from Natarajan, M. (2006). Understanding the Structure of a Large Heroin Distribution Network: A Quantitative Analysis of Qualitative Data. Quantitative Journal of Criminology, 22(2), 171-192.