@article{DA,
      recid = {4771},
      title = {Burr and thimble illustration},
      address = {1860},
      number = {DA},
      abstract = {Black and white illustration of a burr and thimble for  preparing cavities.},
      url = {http://digitalcollections.ohsu.edu/record/4771},
      doi = {https://doi.org/10.6083/M4CR5RRP},
}