I wrote: "Dreadnaught end Class X29 boxcars were in PRR 97949-103324; cars were built 1932-1934."
Bruce Smith wrote: "The number series as built, 1932-1934 was 100000-103324."
Bruce has the number series correct; car numbers preceding 100000 DID NOT have Dreadnaught ends. Same caveat regarding the 100688 and the radial roof cars applies.