010T TOBACCO
024T KITE & KEY
060T COTTON GIN
064T CLPPR SHIP
069T STEAMBOAT
095T SPLT RAILS
116T ANESTHETIC
117T RUBBER
118T MORSE CODE
127T SEWNG MCHN
128T PRINTPRESS
175T TYPEWRITER
176T BARB WIRE
178T RAIL TRAVL
181T RAILS JOIN
182T BICYCLE
187T TELEPHONE
189T PHONOGRAPH
190T LIGHT BULB
195T SKYSCRAPER
201T PHOTOGRPHY
211T GW CARVER
218T STEEL MILL
219T PHOTOS
222T PNMA CANAL
223T FRST FLGHT
226T MODEL T
232T AUTO FCTRY
236T EINSTEIN
248T BROADCSTNG
249T HOME RADIO
252T FROZN FOOD
254T 1ST ROCKET
255T LINDBERGH
257T AUTOMOBILE
258T FREEWAYS
264T NYLON
265T RADIO SGNL
266T DEUTERIUM
269T NEUTRONS
274T PLUTONIUM
278T BOMBING
281T TAPE RCRDR
282T NU REACTOR
283T PENICILLIN
290T X1 ROCKET
291T RADOCARBON
292T TRANSISTOR
294T AIRLFT
295T TELEVISION
297T DNA
303T EXPLORER I
304T NASA
309T SPCE CHIMP
312T JOHN GLENN
327T ARMSTRONG
328T SPACE VIEW
330T I CIRCUITS
338T SHUTTLE