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![dti1.png](https://static.wixstatic.com/media/69405c_21ed5000372443619daa68b28e5e7bae~mv2.png/v1/fill/w_600,h_166,al_c,q_85,usm_0.66_1.00_0.01,enc_avif,quality_auto/dti1.png)
It is a great honor to be able to share with you the DT&I interchange diagrams, circa 1930. These blueprints are essential for understanding some of the basic operations of the line. All scans are original, except for Fayne and Gregg's which are recreations.
A big thanks to Joe Swogger and Jim Henry for sharing these diagrams from their collections.
NOTE: These are PDF files and are rather large in size.
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