There are 7 Engineering & Research 415-E aircraft on the U.S. registry that TailWiki has a page for. Every one is built from the public FAA record — year, serial, engine, home base, and registration history — and owners and pilots add photos, trips, and stories on top. The ones listed here were built between 1946 and 1948.
N415LS
1948 Engineering & Research 415-E
Houston, TX
N94809
1948 Engineering & Research 415-E
Chino, CA
N94707
1947 Engineering & Research 415-E
Brownwood, TX
N99622
1946 Engineering & Research 415-E
Swansea, SC
N1100B
Engineering & Research 415-E
Forney, TX
N82582
Engineering & Research 415-E
Georgetown, TX
N94829
Engineering & Research 415-E
Canyon Lake, TX