https://chronoscope-mu.vercel.app/eras/invention-of-cinema monthly 0.5 https://chronoscope-mu.vercel.app/eras/nickelodeon-era monthly 0.5 https://chronoscope-mu.vercel.app/eras/silent-era monthly 0.5 https://chronoscope-mu.vercel.app/eras/pre-code-hollywood monthly 0.5 https://chronoscope-mu.vercel.app/eras/classical-hollywood monthly 0.5 https://chronoscope-mu.vercel.app/eras/noirs-westerns-creature-features monthly 0.5