Great story about your Dad and nice find on the article Knute.

What Springfield parts were used? I there a full length photo?

The "Popular Mechanics" article mentions 1914 Enfield and U.S. Rifle - Model of 1917 production by Remington, Winchester, and Midvale.

"Midvale" is reference to the Eddystone, Pa. plant. This facility was housed in buildings located on the Baldwin Site and built by the Baldwin Locomotive Works.

An  arrangement was made between a new Corporation, Remington Arms of Delaware, and Baldwin Locomotive. Remington leased, equipped and staffed the new structures, which would revert to the Locomotive Works, after war production of the 'Enfield' rifles.

Eventually, Remington Arms of Delaware was sold and absorbed by the Midvale Steel & Ordnance Company, in January 1918.

The Eddystone Plant had a work force of over 15,000 and after April, 1918, 3,000 Women would come to be employed there.

The Remington Plant at Illion, N.Y., also provided significant '1914 & 1917 Enfield Rifle' production. The Remington Arms Bridgeport Plant manufactured munitions.

Attached: Eddystone rifle Plant, Baldwin Locomotive complex at Eddystone (Arms Plant 'circled'), Female Eddystone Worker, workers at Remington Ilion, N.Y. Plant and Remington/UMC canal facility at Ithaca.