You may want to look at the TWA entry in the following site (see alphabetical index at the bottom of the page).
Unfortunately, as explained at the beginning, this site hasn't been updated since the late 1990s, but for earlier US airline fleet details I have always found it to be an excellent information source. It lists virtually every aircraft operated by all US airlines from the days of the DC-3, with details of registration, consruction/serial numbers, delivery/retirement dates, previous operator where applicable, aircraft written off in accidents etc. etc. Since you're interested in TW
's fleet when they were at their peak, this should be a good resource.