▁a ▁visual ▁pan or ama ▁of ▁P once ' s ▁streets , ▁public ▁and ▁private ▁buildings , ▁pla zas , ▁and ▁business es ▁in ▁the ▁first ▁two ▁dec ades ▁of ▁the ▁ 2 0 th ▁century . ▁ ▁The ▁Mar iana ▁Su á rez ▁de ▁Long o ▁collection ▁This ▁collection ▁covers ▁the ▁period ▁from ▁ 1 9 4 9 ▁to ▁ 1 9 7 0 . ▁It ▁consists ▁of ▁correspond ence , ▁inv itations , ▁gradu ation ▁cards , ▁newspaper ▁cli ppings , ▁tele gram s , ▁and ▁photograph s ▁of ▁educational ▁activities ▁in ▁P once ▁between ▁ 1 9 4 9 ▁and ▁ 1 9 7 0 . ▁ ▁The ▁Ram ón ▁López ▁C res po ▁collection ▁The ▁Ram ón ▁López ▁C res po ▁collection ▁covers ▁the ▁period ▁from ▁ 1 9 6 0 ▁to ▁ 1 9 8 0 . ▁It ▁consists ▁of ▁photograph s , ▁post ers , ▁programs ▁of ▁cultural ▁events , ▁mag az ines , ▁letters , ▁newsp apers , ▁post cards , ▁fly ers ▁for ▁musical ▁and ▁the atr ical ▁events , ▁illustr ating ▁cultural ▁life ▁and ▁events ▁in ▁P once ▁between ▁ 1 9 6 0 ▁and ▁ 1 9 8 0 . ▁ ▁See ▁also ▁ ▁Casa ▁Sal azar - C andal ▁ ▁References ▁ ▁External ▁links ▁ ▁Museum ▁of ▁P once ▁History ▁- ▁Tra vel ▁P once ▁ ▁Further ▁reading ▁ ▁F ay ▁F ow lie ▁de ▁Fl ores . ▁P once , ▁Per la ▁del ▁Sur : ▁Una ▁Bibli ográfica ▁An ot ada