Tank car fun:

Mid-1920s GATC with Gulf-style tank anchors
https://www.lakestatesarchive.org/Ed-Wilkommen-Collection/Freight-Cars/i-fZF9btb/A

High-angle PTC
https://www.lakestatesarchive.org/Ed-Wilkommen-Collection/Freight-Cars/i-LwFMpXv/A

ACF Type 26
https://www.lakestatesarchive.org/Ed-Wilkommen-Collection/Freight-Cars/i-HQLhRft/A

Another number for the Tangent 1917 tank
https://www.lakestatesarchive.org/Ed-Wilkommen-Collection/Freight-Cars/i-jVTH7k3/A

Both types of PTC tank saddles
https://www.lakestatesarchive.org/Ed-Wilkommen-Collection/Freight-Cars/i-zrsZFLT/A

Pre-1917 GATC
https://www.lakestatesarchive.org/Ed-Wilkommen-Collection/Freight-Cars/i-zZsnSdq/A

One of the last riveted "generic" Type 27s?
https://www.lakestatesarchive.org/Ed-Wilkommen-Collection/Freight-Cars/i-gXgzgxT/A

Gulf USRA-derivative tank
https://www.lakestatesarchive.org/Ed-Wilkommen-Collection/Freight-Cars/i-KTX6r8d/A

Earlier PTC saddle
https://www.lakestatesarchive.org/Ed-Wilkommen-Collection/Freight-Cars/i-sn4kR6k/A
https://www.lakestatesarchive.org/Ed-Wilkommen-Collection/Freight-Cars/i-4k84Smb/A

ACF Type 17
https://www.lakestatesarchive.org/Ed-Wilkommen-Collection/Freight-Cars/i-NCc9H72/A

ACF Type 25?
https://www.lakestatesarchive.org/Ed-Wilkommen-Collection/Freight-Cars/i-NddhXcR/A

UTLX oddball
https://www.lakestatesarchive.org/Ed-Wilkommen-Collection/Freight-Cars/i-vMSvWjN/A

Three-course radial X-3?
https://www.lakestatesarchive.org/Ed-Wilkommen-Collection/Freight-Cars/i-nCxZTjB/A

12k GATC-built Gulf
https://www.lakestatesarchive.org/Ed-Wilkommen-Collection/Freight-Cars/i-8NtJGv7/A

Standard Car Construction STC tank
https://www.lakestatesarchive.org/Ed-Wilkommen-Collection/Freight-Cars/i-wZMRfKj/A

David Thompson