Did Robert Lincoln Ride the Funeral Train to Baltimore?

[loetar44]

I'm trying to build a picture of the funeral and the exact order in which things happened. Does anyone know which coffin was placed first in the vault, Willie’s or Lincoln’s? Thanks Scott, for your help!

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I wonder why RTL gave him the vault keys instead of keeping them himself?

Since Robert was about to live in Chicago I suppose he left the key in Springfield in case something happens that requires immediate access (e.g. a fire). Plus J.T.S. wasn't only a relative but also a lawyer and would know what cases would justify to use it.

Another reason - the key was in Springfield at any time a close friend or relative came to visit the grave.

I wonder, was the vault not only closed, but also sealed?