The Capitol's dome made of cast iron was projected by Thomas Walter and constructed from 1856-1866. On December 16, 1854, Walter hung in his office a drawing of the Capitol as it would appear once the extensions were finished, but without the Bulfinch dome. Instead it showed a new one with columns, pilasters, brackets, scores of windows and a crowning statue. (Architect of the Capitol, 2024)
country: America
year: 1962
Yvert: airmail 61
![Conmemoración del día de las fuerzas armadas: McDonnell Douglas F-4C Phantom II (interceptor y cazabombardero supersónico): El Ejército del Aire adquirió 36 aviones en 1971 y otros 4 en 1978. Los 33 supervivientes fueron dados de baja definitivamente en 1989. (McDonnell Aircraft Corporation, Saint Louis [Missouri], 1958)](https://encyclopaediaphilatelica.net/storage/uploads/63f3ff5ef31df-phpkguuns.jpeg)
![X-Y position indicator for a display system: One of the potentially most promising means for delivering and receiving information to and from digital computers involves the display of computer outputs as visual representations on a cathode ray tube and the alteration of the display by a human operator in order to deliver instructions to the computer.[Stanford Research Institute (Menlo Park), 1970]](https://encyclopaediaphilatelica.net/storage/uploads/5a85b0ab8d168-phpgyc48r.jpeg)
