Claims

The Washington Monument's proportions were revised based on George Perkins Marsh's input

Documented · occurred What these labels mean →

The Washington Monument's proportions were revised following input from George Perkins Marsh.

Evidence

RelationRecordNote
documentsnpshistory.comNRHP nomination (NPS): Casey redesigned it as an Egyptian obelisk 'in accordance with the suggestions of George Perkins Marsh'
corroboratesnps.govNPS: obelisk altered to conform to 'classical Egyptian proportions'; construction resumed 1879 under Casey

Sources

SourceRelationAt
DC Masonic symbolism (Camp Gagnon)asserts

Claim

The Washington Monument's proportions were revised following input from George Perkins Marsh.