I'm trying to look at FRED data in the Jupyter notebook, but am only getting empty DataFrames back. No errors. Any idea what I may be doing wrong? It works fine in the algo / main.py.

import numpy as np
import pandas as pd
import matplotlib.pyplot as plt
from AlgorithmImports import *

qb = QuantBook()
from QuantConnect.DataSource import *

fred_peak_to_trough = qb.AddData(Fred, Fred.OECDRecessionIndicators.UnitedStatesFromPeakThroughTheTrough, Resolution.Daily).Symbol
inflation_history = qb.History(fred_peak_to_trough, 60, Resolution.Daily)

The result I get is: 

Empty DataFrame
Columns: []
Index: []