  Results from new BVRI photometric observations of the pre-MS stars V521 Cyg
and FHO 27 collected during the period from February 2015 to July 2019 are
presented. These stars are embedded in the LDN 935, dubbed "The Gulf of Mexico"
in the active star-forming complex NGC 7000/IC 5070. Previous studies revealed
them as variables with large amplitude brightness variations. Our new
observations show that the stars continue to exhibit strong photometric
variability and fading events in the brightness. On the basis of the new data
received and the data available in the literature, we were able to specify the
periodicity in the brightness variations of V521 Cyg. In the case of FHO 27, we
found a significant peak in its periodogram corresponding to 893 days period.
